din_standard string | id string | iso_standard string | part_description string | source string | source_quote string | url string | verified_fields list | also_reported list | disagreements list | interchangeability string | bs_standard string | dimension string | din_value string | iso_value string | size string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DIN 1 | din-1 | ISO 2339 | Cone Pins, untempered | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1 | ISO 2339 | | Cone Pins, untempered | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 84 | din-84 | ISO 1207 | Slotted Cheese Head Screw | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Cheese Head Screw | DIN 84 | ISO 1207 | Check spec | Head dia/height tolerances may vary. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-84/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"as_of": "2026-08-05T00:00:00",
"field": "bs_standard",
"source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
"source_quote": "DIN 84 | ISO 1207 | BS4183 | Product grade A Slotted Cheese Head Screws |",
"value": "BS4183"
}
] | [] | Check spec | null | null | null | null | null |
DIN 85 | din-85 | ISO 1580 | Product grade A Slotted Pan Head Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 85 | ISO 1580 | BS4183 | Product grade A Slotted Pan Head Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-85/ | [
"bs_standard",
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | BS4183 | null | null | null | null |
DIN 93 | din-93 | null | Tab Washers with long tab | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 93 | | | Tab Washers with long tab | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-93/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 94 | din-94 | ISO 1234 | Split Pins | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 94 | ISO 1234 | | Split Pins | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-94/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 95 | din-95 | null | Slotted Raised Countersunk (oval) Head Wood Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 95 | | | Slotted Raised Countersunk (oval) Head Wood Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-95/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 96 | din-96 | null | Slotted Round Head Wood Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 96 | | | Slotted Round Head Wood Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-96/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 125 | din-125 | ISO 7089, 7090 | Washer, Plain | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Washer, Plain | DIN 125 | ISO 7089, 7090 | Fully interchangeable | Normal vs chamfered faces. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-125/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Washer, Plain | DIN 125 | ISO 7089, 7090 | Fully interchangeable | Normal vs chamfered faces.",
... | Fully interchangeable | null | null | null | null | null |
DIN 126 | din-126 | ISO 7091 | Product grade C washers - designed for use with Hexagon Head Bolts and Nut | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 126 | ISO 7091 | | Product grade C washers - designed for use with Hexagon Head Bolts and Nut | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-126/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 127 | din-127 | null | Spring Lock Washers with square ends or tang ends | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 127 | | BS4464B | Spring Lock Washers with square ends or tang ends | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-127/ | [
"bs_standard",
"din_standard",
"part_description"
] | null | null | null | BS4464B | null | null | null | null |
DIN 128 | din-128 | null | Curved and wave Spring Lock Washers | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 128 | | | Curved and wave Spring Lock Washers | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-128/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 137 | din-137 | null | Spring Washers, curved or wave | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 137 | | | Spring Washers, curved or wave | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-137/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 315 | din-315 | null | Wing Nuts with rounded wings | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 315 | | | Wing Nuts with rounded wings | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-315/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 316 | din-316 | null | Wing Screws with rounded wings | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 316 | | | Wing Screws with rounded wings | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-316/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 404 | din-404 | null | Slotted Capstan Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 404 | | | Slotted Capstan Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-404/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 417 | din-417 | DIN EN 27435 | Slotted Set Screw – Long Dog | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Long Dog | DIN 417 | DIN EN 27435 | Check spec | Legacy to EN conversion. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-417/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Slotted Set Screw – Long Dog | DIN 417 | DIN EN 27435 | Check spec | Legacy to EN conversion.",
... | Check spec | null | null | null | null | null |
DIN 427 | din-427 | ISO 2342 | Slotted Headless Screw with Shank | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Headless Screw with Shank | DIN 427 | ISO 2342 | Fully interchangeable | Slotted variant. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-427/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 428 | din-428 | ISO 4034 | Hexagon Nuts, Grade C | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 428 | ISO 4034 | | Hexagon Nuts, Grade C | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-428/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 433 | din-433 | ISO 7092 | Washer, Plain Small | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Washer, Plain Small | DIN 433 | ISO 7092 | Fully interchangeable | Small series. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-433/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | null | Fully interchangeable | null | null | null | null | null |
DIN 433-1 | din-433-1 | ISO 7092 | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 433-1 | ISO 7092 | | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-433-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 433-2 | din-433-2 | ISO 7092 | Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 433-2 | ISO 7092 | | Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-433-2/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 438 | din-438 | DIN EN 27436 | Slotted Set Screw – Cup | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Cup | DIN 438 | DIN EN 27436 | Check spec | Legacy to EN conversion. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-438/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [
{
"field": "iso_standard",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners",
"source_quote": "Slotted Set Screw – Cup | DIN 438 | DIN EN 27436 | Check spec | Legacy to EN conversion.",
"va... | Check spec | null | null | null | null | null |
DIN 439 | din-439 | ISO 4035, 4036 | Hex Nut – Thin | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Nut – Thin | DIN 439 | ISO 4035, 4036 | Fully interchangeable | Chamfered/unchamfered covered by ISO pair. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-439/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | null | Fully interchangeable | null | null | null | null | null |
DIN 439-1 | din-439-1 | ISO 4036 | Unchamfered Hexagon Thin Nuts - product grade B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 439-1 | ISO 4036 | | Unchamfered Hexagon Thin Nuts - product grade B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-439-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 439-2 | din-439-2 | ISO 4035 | Chamfered Hexagon Thin Nuts - product grades A and B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-439-2/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 440 | din-440 | ISO 7094 | Washers for use in timber constructions | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 440 | ISO 7094 | | Washers for use in timber constructions | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-440/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 444 | din-444 | null | Eyebolts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 444 | | | Eyebolts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-444/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 462 | din-462 | null | Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804 | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 462 | | | Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804 | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-462/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 464 | din-464 | null | Knurled Thumb Screws, high type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 464 | | | Knurled Thumb Screws, high type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-464/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 466 | din-466 | null | Knurled Nuts, high type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 466 | | | Knurled Nuts, high type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-466/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 467 | din-467 | null | Knurled Nuts, low type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 467 | | | Knurled Nuts, low type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-467/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 471 | din-471 | null | Circlips (retaining rings) for shafts; normal type and heavy type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 471 | | | Circlips (retaining rings) for shafts; normal type and heavy type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-471/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 479 | din-479 | null | Square Head Bolts with short dog point | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 479 | | | Square Head Bolts with short dog point | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-479/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 548 | din-548 | null | Round Nuts with set pin holes inside | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 548 | | | Round Nuts with set pin holes inside | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-548/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 551 | din-551 | ISO 4766 | Slotted Set Screw – Flat | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Flat | DIN 551 | ISO 4766 | Check spec | Slot width/tolerance differences. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-551/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Check spec | null | null | null | null | null |
DIN 553 | din-553 | ISO 7434 | Slotted Set Screw – Cone | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Set Screw – Cone | DIN 553 | ISO 7434 | Check spec | Point geometry. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-553/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Check spec | null | null | null | null | null |
DIN 555 | din-555 | ISO 4034 | M5 to M100x6 Hexagon Nuts - product grade C | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 555 | ISO 4034 | | M5 to M100x6 Hexagon Nuts - product grade C | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-555/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 558 | din-558 | ISO 4018 | Hex Head Bolts (FT), Metric Coarse | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Bolts (FT), Metric Coarse | DIN 558 | ISO 4018 | Fully interchangeable | Alt coarse hex FT. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-558/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 580 | din-580 | null | Collar Eyebolts for lifting purposes | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 580 | | | Collar Eyebolts for lifting purposes | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-580/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 601 | din-601 | ISO 4016 | Hex Head Bolts (PT), Metric Coarse | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Bolts (PT), Metric Coarse | DIN 601 | ISO 4016 | Fully interchangeable | Alt coarse hex PT. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-601/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 603 | din-603 | null | Mushroom Head Square Neck Bolts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 603 | | | Mushroom Head Square Neck Bolts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-603/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 609 | din-609 | null | Hexagon Fits Bolts with long thread | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 609 | | | Hexagon Fits Bolts with long thread | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-609/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 653 | din-653 | null | Knurled Thumb Screws, low type | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 653 | | | Knurled Thumb Screws, low type | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-653/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 908 | din-908 | null | Hexagon Socket Screw Plugs with parallel screw thread | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 908 | | | Hexagon Socket Screw Plugs with parallel screw thread | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-908/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 910 | din-910 | null | Hexagon-duty hexagon Head Screw Plugs | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 910 | | | Hexagon-duty hexagon Head Screw Plugs | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-910/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 911 | din-911 | ISO 2936 | Hexagon Socket Screw Keys | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 911 | ISO 2936 | | Hexagon Socket Screw Keys | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-911/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 912 | din-912 | ISO 4762 | Socket Head Cap Screw, Coarse | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Socket Head Cap Screw, Coarse | DIN 912 | ISO 4762 | Fully interchangeable | Primary SHCS spec (coarse). | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-912/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"as_of": "2026-08-05T00:00:00",
"field": "bs_standard",
"source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
"source_quote": "DIN 912 | ISO 4762 | BS4168 | Hexagon Socket Head Cap Screws (modified version of ISO 4762) |",
"value": "BS4168"
}
] | [] | Fully interchangeable | null | null | null | null | null |
DIN 913 | din-913 | ISO 4026 | Socket Set Screw – Flat Point | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Socket Set Screw – Flat Point | DIN 913 | ISO 4026 | Fully interchangeable | Headless (grub) screw, flat. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-913/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 914 | din-914 | ISO 4027 | Socket Set Screw – Cone Point | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Socket Set Screw – Cone Point | DIN 914 | ISO 4027 | Fully interchangeable | Headless, cone. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-914/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 915 | din-915 | ISO 4028 | Socket Set Screw – Dog Point | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Socket Set Screw – Dog Point | DIN 915 | ISO 4028 | Fully interchangeable | Headless, dog. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-915/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 916 | din-916 | ISO 4029 | Socket Set Screw – Cup Point | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Socket Set Screw – Cup Point | DIN 916 | ISO 4029 | Fully interchangeable | Headless, cup. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-916/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 918-3 | din-918-3 | null | Overview of European standards for fasteners | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 918-3 | | | Overview of European standards for fasteners | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-918-3/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 921 | din-921 | null | Slotted Pan Head Screws with large head | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 921 | | | Slotted Pan Head Screws with large head | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-921/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 923 | din-923 | null | Slotted Pan Head Screws with shoulder | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 923 | | | Slotted Pan Head Screws with shoulder | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-923/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 929 | din-929 | null | Hexagon Weld Nuts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 929 | | | Hexagon Weld Nuts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-929/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 930 | din-930 | null | Fine thread pitch partially Threaded Screws | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 930 | | | Fine thread pitch partially Threaded Screws | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-930/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 931 | din-931 | ISO 4014 | Sechskantschrauben mit Teilgewinde | https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php | ISO 4014/4017 Sechskantschrauben Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zurückgezogen wurden. Die entsprechenden ISO – Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zurückgezogenen DIN – Normen. Dadurch sind grundsätzliche keine Einschränkungen bei der Verwendungen dieser ISO ... | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-931/ | [
"din_standard",
"interchangeability",
"iso_standard"
] | null | [
{
"field": "interchangeability",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
"source_quote": "ISO 4014/4017 Sechskantschrauben Die Normen DIN 931 und ... | dass sich bei den Abmessungen M10, M12, M14 und M22 die Schlüsselweiten geändert haben und somit andere Verschraubungswerkzeuge eingesetzt werden müssen | null | null | null | null | null |
DIN 931-1 | din-931-1 | ISO 4014 | M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 931-1 | ISO 4014 | BS3692 | M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-931-1/ | [
"bs_standard",
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | BS3692 | null | null | null | null |
DIN 931-2 | din-931-2-2 | ISO 4014 | M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 931-2 | ISO 4014 | BS3692 | M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-931-2-2/ | [
"bs_standard",
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | BS3692 | null | null | null | null |
DIN 933 | din-933 | ISO 4017 | Sechskantschrauben mit Vollgewinde | https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php | DIN 933/931 und ISO 4014/4017 Sechskantschrauben Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zurückgezogen wurden. Die entsprechenden ISO – Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zurückgezogenen DIN – Normen. Dadurch sind grundsätzliche keine Einschränkungen bei der Verwendu... | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-933/ | [
"din_standard",
"interchangeability",
"iso_standard"
] | [
{
"as_of": "2026-08-05T00:00:00",
"field": "bs_standard",
"source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
"source_quote": "DIN 933 | ISO 4017 | BS3692 | M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8 |",
"value": "BS3692"
}
] | [
{
"field": "interchangeability",
"versions": [
{
"as_of": "2026-08-05T00:00:00",
"source": "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php",
"source_quote": "DIN 933/931 und ISO 4014/4017 Sechskantschrauben Die Nor... | dass sich bei den Abmessungen M10, M12, M14 und M22 die Schlüsselweiten geändert haben und somit andere Verschraubungswerkzeuge eingesetzt werden müssen | null | null | null | null | null |
DIN 934 | din-934 | ISO 4032 | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 934 | ISO 4032 | | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-934/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 935-1 | din-935-1 | null | Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 935-1 | | | Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-935-1/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 935-2 | din-935-2 | null | M42 to M160x6 Hexagon Head Bolts; product grade B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 935-2 | | | M42 to M160x6 Hexagon Head Bolts; product grade B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-935-2/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 935-3 | din-935-3 | null | Hexagon Slotted Nuts with metric coarse pitch thread - product grade C | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 935-3 | | | Hexagon Slotted Nuts with metric coarse pitch thread - product grade C | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-935-3/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 936 | din-936 | null | M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 936 | | BS3692 | M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-936/ | [
"bs_standard",
"din_standard",
"part_description"
] | null | null | null | BS3692 | null | null | null | null |
DIN 937 | din-937 | null | Hexagon Thin Castle Nuts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 937 | | | Hexagon Thin Castle Nuts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-937/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 938 | din-938 | null | Studs with a length of engagement equal to about 1 d | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 938 | | | Studs with a length of engagement equal to about 1 d | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-938/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 939 | din-939 | null | Studs with a length of engagement equal to about 1,25 d | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 939 | | | Studs with a length of engagement equal to about 1,25 d | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-939/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 960 | din-960 | ISO 8765 | Hex Head Bolts (PT), Metric Fine | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Bolts (PT), Metric Fine | DIN 960 | ISO 8765 | Fully interchangeable | Fine thread PT. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-960/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 961 | din-961 | ISO 8676 | Hex Head Bolts (FT), Metric Fine | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Head Bolts (FT), Metric Fine | DIN 961 | ISO 8676 | Fully interchangeable | Fine thread FT. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-961/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Fully interchangeable | null | null | null | null | null |
DIN 962 | din-962 | null | Designation system for fasteners | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 962 | | | Designation system for fasteners | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-962/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 963 | din-963 | ISO 2009 | Slotted Flat Head (Countersunk) | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Flat Head (Countersunk) | DIN 963 | ISO 2009 | Check spec | Countersink/head geometry differences. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-963/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"as_of": "2026-08-05T00:00:00",
"field": "bs_standard",
"source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
"source_quote": "DIN 963 | ISO 2009 | BS3692 | Slotted Countersunk Head Screws (with countersunk heads as specified in ISO 2009-1972) |",
"value"... | [] | Check spec | null | null | null | null | null |
DIN 964 | din-964 | ISO 2010 | Slotted Raised Countersunk | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Slotted Raised Countersunk | DIN 964 | ISO 2010 | Check spec | Raised profile may differ slightly. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-964/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"as_of": "2026-08-05T00:00:00",
"field": "bs_standard",
"source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
"source_quote": "DIN 964 | ISO 2010 | BS3692 | Slotted Raised Countersunk Oval Head Screws |",
"value": "BS3692"
}
] | [] | Check spec | null | null | null | null | null |
DIN 965 | din-965 | ISO 7046 | Cross Recessed Flat Head | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Cross Recessed Flat Head | DIN 965 | ISO 7046 | Check spec | Head/countersink geometry. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-965/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | [
{
"as_of": "2026-08-05T00:00:00",
"field": "bs_standard",
"source": "https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards",
"source_quote": "DIN 965 | ISO 7046 | BS3692 | Cross Recessed Countersunk Flat Head Screws |",
"value": "BS3692"
}
] | [] | Check spec | null | null | null | null | null |
DIN 966 | din-966 | ISO 7047 | Cross Recessed Raised Countersunk | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Cross Recessed Raised Countersunk | DIN 966 | ISO 7047 | Check spec | Raised profile/diameter tolerance. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-966/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Check spec | null | null | null | null | null |
DIN 970 | din-970 | ISO 4032 | Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 970 | ISO 4032 | | Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-970/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 971-1 | din-971-1 | ISO 8673 | Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8 | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 971-1 | ISO 8673 | | Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8 | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-971-1/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 971-2 | din-971-2 | ISO 8674 | Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12 | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 971-2 | ISO 8674 | | Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12 | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-971-2/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 972 | din-972 | ISO 4034 | M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034) | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 972 | ISO 4034 | | M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034) | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-972/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 975 | din-975 | null | Threaded Rods | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 975 | | | Threaded Rods | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-975/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 976-1 | din-976-1 | null | Metric thread Stud Bolts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 976-1 | | | Metric thread Stud Bolts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-976-1/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 976-2 | din-976-2 | null | Metric interference-fit thread Stud Bolts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 976-2 | | | Metric interference-fit thread Stud Bolts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-976-2/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 977 | din-977 | ISO 21670 | Hex Weld Nut with Flange | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Hex Weld Nut with Flange | DIN 977 | ISO 21670 | Check spec | Weld bosses/OD differ by series. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-977/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Check spec | null | null | null | null | null |
DIN 979 | din-979 | null | Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 979 | | | Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-979/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 980 | din-980 | ISO 7042 | All-metal prevailing torque type Hexagon Nuts | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 980 | ISO 7042 | | All-metal prevailing torque type Hexagon Nuts | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-980/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 980, 6925 | din-980-6925 | ISO 7042, 10513 | Prevailing Torque All-Metal Nut | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Prevailing Torque All-Metal Nut | DIN 980, 6925 | ISO 7042, 10513 | Check spec | Prevail torque requirements vary. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-980-6925/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | null | Check spec | null | null | null | null | null |
DIN 981 | din-981 | null | Locknuts for use with rolling bearings | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 981 | | | Locknuts for use with rolling bearings | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-981/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 982 | din-982 | ISO 7040 | Prevailing torque type Hexagon Nuts with non-metallic insert | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 982 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-982/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 982, 6924 | din-982-6924 | ISO 7040, 10512 | Prevailing Torque Nylon Insert Nut | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Prevailing Torque Nylon Insert Nut | DIN 982, 6924 | ISO 7040, 10512 | Check spec | Insert height/torque windows. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-982-6924/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | null | Check spec | null | null | null | null | null |
DIN 983 | din-983 | null | Retaining Rings with lugs for use on shafts (external circlips) | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 983 | | | Retaining Rings with lugs for use on shafts (external circlips) | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-983/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 985 | din-985 | ISO 10511 | Nylon Insert Lock Nut (thin) | https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners | Nylon Insert Lock Nut (thin) | DIN 985 | ISO 10511 | Check spec | Thin pattern; verify heights. | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-985/ | [
"din_standard",
"interchangeability",
"iso_standard",
"part_description"
] | null | [] | Check spec | null | null | null | null | null |
DIN 986 | din-986 | null | Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 986 | | | Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-986/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 988 | din-988 | null | Shim Rings and supporting rings | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 988 | | | Shim Rings and supporting rings | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-988/ | [
"din_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1440 | din-1440 | ISO 8738 | Medium type washers for pins | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1440 | ISO 8738 | | Medium type washers for pins | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1440/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1443 | din-1443 | ISO 2340 | Clevis Pins without head | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1443 | ISO 2340 | | Clevis Pins without head | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1443/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1444 | din-1444 | ISO 2341 | Clevis Pins with head | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1444 | ISO 2341 | | Clevis Pins with head | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1444/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1470 | din-1470 | ISO 8739 | Grooved Pins, full length parallel-grooved with pilot | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1470 | ISO 8739 | | Grooved Pins, full length parallel-grooved with pilot | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1470/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1471 | din-1471 | ISO 8744 | Grooved Pins, full length taper-grooved | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1471 | ISO 8744 | | Grooved Pins, full length taper-grooved | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1471/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1472 | din-1472 | ISO 8745 | Grooved Pins, half length taper-grooved | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1472 | ISO 8745 | | Grooved Pins, half length taper-grooved | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1472/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
DIN 1473 | din-1473 | ISO 8740 | Grooved Pins, full length parallel-grooved with chamfer | https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards | DIN 1473 | ISO 8740 | | Grooved Pins, full length parallel-grooved with chamfer | | https://referencesource.org/fastener-standard-interchangeability-exceptions/din-1473/ | [
"din_standard",
"iso_standard",
"part_description"
] | null | null | null | null | null | null | null | null |
End of preview. Expand in Data Studio
DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable
Canonical, always-current version: https://referencesource.org/fastener-standard-interchangeability-exceptions/ Machine-readable: https://referencesource.org/fastener-standard-interchangeability-exceptions/data.json — this mirror is a point-in-time copy.
- Last verified: 2026-09-22
- Stale after: 2029-09-21 (past this date, prefer the canonical copy — it re-verifies on a cadence this snapshot does not)
- Records: 296
Equivalence between withdrawn DIN fastener standards and their current ISO and BS counterparts, together with -- where a publisher prints them -- the specific sizes at which the two supposedly equivalent standards give different dimensions. Each record is one DIN standard with its ISO and BS counterpart and the publisher's interchangeability verdict, or one size at which a named dimension differs between the two standards. Answers 'is DIN 933 the same as ISO 4017', 'DIN 912 vs ISO 4762 are they interchangeable', 'my drawing says DIN 931 and my distributor only stocks ISO 4014', 'what replaced DIN 934', and 'DIN 125 ISO equivalent washer'. The headline mapping is easy and everyone publishes it; the exception detail is where free sources fail and contradict each other. Wurth, the German distributor that wrote the original catalogues, prints four sizes at which the width across flats changed between DIN 933 and ISO 4017 -- M10 17 mm becomes 16 mm, M12 19 becomes 18, M14 22 becomes 21, M22 32 becomes 34 -- meaning a different spanner. Monster Bolts lists the same pair as fully interchangeable. Both verdicts are published here, attributed, side by side, because the disagreement is the fact.
Provenance — what every record carries
Every record carries source (the URL the value was read from) and
source_quote (a verbatim quote from that page stating it). A value you
cannot check against its page is indistinguishable from an invented one;
these can all be checked. Each record is also individually addressable on
the canonical site at its url.
Licence position
Facts extracted from freely published distributor technical pages. Dimensions are facts, not copyrightable expression (US: Feist, 1991). ISO 4017 and the other ISO fastener documents were not purchased or opened; ISO's own terms restrict use of ISO content, and no ISO content is used here -- only dimensions as facts, quoted from distributors who published them. Three distributor groups, no bulk take from any one: the exception rows come from Wurth (the German page, and a free English technical booklet from Wurth Industry of Canada), the pair list from Monster Bolts, the BS column from TR Fastenings. Of the Canadian booklet only the rows where two standards DIFFER were taken -- 148 cells out of several thousand printed -- so what is reproduced is the divergence, not the compilation.
Facts are not copyrightable; what this dataset takes from each source is a fact plus a short attributed quote linking back to the page that states it.
Sources
- https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards
- https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners
- https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php
- https://www.wurthindustry.ca/media/downloads/wic_pdfs/Fasteners_DIN-EN-ISO_Standards.pdf
Fields
See any record in data/records.jsonl — field names are self-describing,
and the canonical page for each record renders them with labels:
https://referencesource.org/fastener-standard-interchangeability-exceptions/
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