derived_fields list | id string | paired_value string | record_type string | source string | source_quote string | thread_or_drill_size string | url string | verified_fields list | thread_series string | disagreements list |
|---|---|---|---|---|---|---|---|---|---|---|
[
"record_type",
"thread_or_drill_size"
] | 0-35-mm | .0138 | drill_decimal | http://newmantools.com/decinch.htm | .35 | .0138" | 0.35 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-35-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-4-mm | .0157 | drill_decimal | http://newmantools.com/decinch.htm | .40 | .0157" | 0.4 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-4-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-45-mm | .0177 | drill_decimal | http://newmantools.com/decinch.htm | .45 | .0177" | 0.45 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-45-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-5-mm | .0197 | drill_decimal | http://newmantools.com/decinch.htm | .50 | .0197" | 0.5 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-5-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-55-mm | .0217 | drill_decimal | http://newmantools.com/decinch.htm | .55 | .0217" | 0.55 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-55-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-6-mm | .0236 | drill_decimal | http://newmantools.com/decinch.htm | .60 | .0236" | 0.6 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-6-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-65-mm | .0256 | drill_decimal | http://newmantools.com/decinch.htm | .65 | .0256" | 0.65 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-65-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-7-mm | .0276 | drill_decimal | http://newmantools.com/decinch.htm | .70 | .0276" | 0.7 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-7-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-75-mm | .0295 | drill_decimal | http://newmantools.com/decinch.htm | .75 | .0295" | 0.75 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-75-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-8-mm | .0315 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | .80mm | .0315 | 0.8 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-8-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-85-mm | .0335 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | .85mm | .0335 | 0.85 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-85-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-9-mm | .0354 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | .90mm | .0354 | 0.9 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-9-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 0-95-mm | .0374 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | .95mm | .0374 | 0.95 mm | https://referencesource.org/drill-tap-decimal-equivalents/0-95-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-3 | 1.000 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1" | 1.000 | 1" | https://referencesource.org/drill-tap-decimal-equivalents/1-3/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-fine-bsf-1 | 22.75mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1" | 10 | 22.75mm | 1" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-fine-bsf-1/ | [
"paired_value"
] | British Standard Fine (BSF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1 | 22.00 | tap_drill | https://www.newmantools.com/tapdrill.htm | 1" | 8 | 22.00 | 1" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-1-2 | 45.5 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-1/2" | 11 | 1.882 | 45.5 mm | 1-1/2" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-1-2/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-taper-bspt-1-1-2 | 44.5mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-1/2" | 11 | 1.882 | 45.5 mm | 44.5mm | 1-1/2" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-taper-bspt-1-1-2/ | [
"paired_value"
] | British Standard Pipe Taper (BSPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1-1-2 | 33.50mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-1/2" | 6 | 33.50mm | 1-1/2" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1-1-2/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-coarse-unc-1-1-2-6 | 1-11/32 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/2-6 | 1-11/32 | 1-1/2-6 | https://referencesource.org/drill-tap-decimal-equivalents/national-coarse-unc-1-1-2-6/ | [
"paired_value"
] | National Coarse (UNC) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | straight-pipe-nps-1-1-2-11-1-2 | 1-3/4 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/2-11-1/2 | 1-3/4 | 1-1/2-11-1/2 | https://referencesource.org/drill-tap-decimal-equivalents/straight-pipe-nps-1-1-2-11-1-2/ | [
"paired_value"
] | Straight Pipe (NPS) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | taper-pipe-npt-1-1-2-11-1-2 | 1-47/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/2-11-1/2 | 1-47/64 | 1-1/2-11-1/2 | https://referencesource.org/drill-tap-decimal-equivalents/taper-pipe-npt-1-1-2-11-1-2/ | [
"paired_value"
] | Taper Pipe (NPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-fine-unf-1-1-2-12 | 1-27/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/2-12 | 1-27/64 | 1-1/2-12 | https://referencesource.org/drill-tap-decimal-equivalents/national-fine-unf-1-1-2-12/ | [
"paired_value"
] | National Fine (UNF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-1-4 | 39.50 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-1/4" | 11 | 1.650 | 39.50 mm | 1-1/4" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-1-4/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-taper-bspt-1-1-4 | 38.5mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-1/4" | 11 | 1.650 | 39.50 mm | 38.5mm | 1-1/4" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-taper-bspt-1-1-4/ | [
"paired_value"
] | British Standard Pipe Taper (BSPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-coarse-unc-1-1-4-7 | 1-7/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/4-7 | 1-7/64 | 1-1/4-7 | https://referencesource.org/drill-tap-decimal-equivalents/national-coarse-unc-1-1-4-7/ | [
"paired_value"
] | National Coarse (UNC) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | straight-pipe-nps-1-1-4-11-1-2 | 1-33/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/4-11-1/2 | 1-33/64 | 1-1/4-11-1/2 | https://referencesource.org/drill-tap-decimal-equivalents/straight-pipe-nps-1-1-4-11-1-2/ | [
"paired_value"
] | Straight Pipe (NPS) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | taper-pipe-npt-1-1-4-11-1-2 | 1-1/2 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/4-11-1/2 | 1-1/2 | 1-1/4-11-1/2 | https://referencesource.org/drill-tap-decimal-equivalents/taper-pipe-npt-1-1-4-11-1-2/ | [
"paired_value"
] | Taper Pipe (NPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-fine-unf-1-1-4-12 | 1-11/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/4-12 | 1-11/64 | 1-1/4-12 | https://referencesource.org/drill-tap-decimal-equivalents/national-fine-unf-1-1-4-12/ | [
"paired_value"
] | National Fine (UNF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1-1-8 | 24.75mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-1/8" | 7 | 24.75mm | 1-1/8" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1-1-8/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-coarse-unc-1-1-8-7 | 63/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/8-7 | 63/64 | 1-1/8-7 | https://referencesource.org/drill-tap-decimal-equivalents/national-coarse-unc-1-1-8-7/ | [
"paired_value"
] | National Coarse (UNC) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-fine-unf-1-1-8-12 | 1-3/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-1/8-12 | 1-3/64 | 1-1/8-12 | https://referencesource.org/drill-tap-decimal-equivalents/national-fine-unf-1-1-8-12/ | [
"paired_value"
] | National Fine (UNF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1-1-4 | 28.00mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-1.4" | 7 | 28.00mm | 1-1.4" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1-1-4/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-2 | 19.00mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/2 | 14 | 0.825 | 19.00mm | 1/2 | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-2/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-taper-bspt-1-2 | 18.25mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/2 | 14 | 0.825 | 19.00mm | 18.25mm | 1/2 | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-taper-bspt-1-2/ | [
"paired_value"
] | British Standard Pipe Taper (BSPT) | null |
[
"record_type",
"thread_or_drill_size"
] | 1-2 | .5000 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1/2" | .5000 | 1/2" | https://referencesource.org/drill-tap-decimal-equivalents/1-2/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-fine-bsf-1-2 | 11.10mm or 7/16" | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/2" | 16 | 11.10mm or 7/16" | 1/2" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-fine-bsf-1-2/ | [
"paired_value"
] | British Standard Fine (BSF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1-2 | 10.50mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/2" | 12 | 10.50mm | 1/2" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1-2/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-coarse-unc-1-2-13 | 27/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/2-13 | 27/64 | 1/2-13 | https://referencesource.org/drill-tap-decimal-equivalents/national-coarse-unc-1-2-13/ | [
"paired_value"
] | National Coarse (UNC) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | straight-pipe-nps-1-2-14 | 47/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/2-14 | 47/64 | 1/2-14 | https://referencesource.org/drill-tap-decimal-equivalents/straight-pipe-nps-1-2-14/ | [
"paired_value"
] | Straight Pipe (NPS) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | taper-pipe-npt-1-2-14 | 23/32 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/2-14 | 23/32 | 1/2-14 | https://referencesource.org/drill-tap-decimal-equivalents/taper-pipe-npt-1-2-14/ | [
"paired_value"
] | Taper Pipe (NPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-fine-unf-1-2-20 | 29/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/2-20 | 29/64 | 1/2-20 | https://referencesource.org/drill-tap-decimal-equivalents/national-fine-unf-1-2-20/ | [
"paired_value"
] | National Fine (UNF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-3-4 | 51.00 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-3/4" | 11 | 2.116 | 51.00 mm | 1-3/4" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-3-4/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1-3-4 | 39.00mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1-3/4" | 5 | 39.00mm | 1-3/4" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1-3-4/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-coarse-unc-1-3-4-5 | 1-35/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-3/4-5 | 1-35/64 | 1-3/4-5 | https://referencesource.org/drill-tap-decimal-equivalents/national-coarse-unc-1-3-4-5/ | [
"paired_value"
] | National Coarse (UNC) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-fine-unf-1-3-4-12 | 1-43/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1-3/4-12 | 1-43/64 | 1-3/4-12 | https://referencesource.org/drill-tap-decimal-equivalents/national-fine-unf-1-3-4-12/ | [
"paired_value"
] | National Fine (UNF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-4 | 11.8 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/4 | 19 | 0.518 | 11.8 mm | 1/4 | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-4/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-taper-bspt-1-4 | 11.2mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/4 | 19 | 0.518 | 11.8 mm | 11.2mm | 1/4 | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-taper-bspt-1-4/ | [
"paired_value"
] | British Standard Pipe Taper (BSPT) | null |
[
"record_type",
"thread_or_drill_size"
] | 1-4 | .2500 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1/4" | .2500 | 1/4" | https://referencesource.org/drill-tap-decimal-equivalents/1-4/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-fine-bsf-1-4 | 5.30mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/4" | 26 | 5.30mm | 1/4" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-fine-bsf-1-4/ | [
"paired_value"
] | British Standard Fine (BSF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1-4 | 5.10mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/4" | 20 | 5.10mm | 1/4" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1-4/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | straight-pipe-nps-1-4-18 | 29/64 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/4-18 | 29/64 | 1/4-18 | https://referencesource.org/drill-tap-decimal-equivalents/straight-pipe-nps-1-4-18/ | [
"paired_value"
] | Straight Pipe (NPS) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | taper-pipe-npt-1-4-18 | 7/16 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/4-18 | 7/16 | 1/4-18 | https://referencesource.org/drill-tap-decimal-equivalents/taper-pipe-npt-1-4-18/ | [
"paired_value"
] | Taper Pipe (NPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-coarse-unc-1-4-20 | #7 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/4-20 | #7 | 1/4-20 | https://referencesource.org/drill-tap-decimal-equivalents/national-coarse-unc-1-4-20/ | [
"paired_value"
] | National Coarse (UNC) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-fine-unf-1-4-28 | #3 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/4-28 | #3 | 1/4-28 | https://referencesource.org/drill-tap-decimal-equivalents/national-fine-unf-1-4-28/ | [
"paired_value"
] | National Fine (UNF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-8 | 8.8 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/8 | 28 | 0.383 | 8.8 mm | 1/8 | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-8/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-taper-bspt-1-8 | 8.4mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/8 | 28 | 0.383 | 8.8 mm | 8.4mm | 1/8 | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-taper-bspt-1-8/ | [
"paired_value"
] | British Standard Pipe Taper (BSPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-coarse-unc-1-8 | 7/8 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1"-8 | 7/8 | 1"-8 | https://referencesource.org/drill-tap-decimal-equivalents/national-coarse-unc-1-8/ | [
"paired_value"
] | National Coarse (UNC) | null |
[
"record_type",
"thread_or_drill_size"
] | 1-8 | .1250 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1/8" | .1250 | 1/8" | https://referencesource.org/drill-tap-decimal-equivalents/1-8/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-whitworth-bsw-1-8 | 2.55mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/8" | 40 | 2.55mm | 1/8" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-whitworth-bsw-1-8/ | [
"paired_value"
] | British Standard Whitworth (BSW) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | straight-pipe-nps-1-8-27 | S | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/8-27 | S | 1/8-27 | https://referencesource.org/drill-tap-decimal-equivalents/straight-pipe-nps-1-8-27/ | [
"paired_value"
] | Straight Pipe (NPS) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | taper-pipe-npt-1-8-27 | R | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1/8-27 | R | 1/8-27 | https://referencesource.org/drill-tap-decimal-equivalents/taper-pipe-npt-1-8-27/ | [
"paired_value"
] | Taper Pipe (NPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | straight-pipe-nps-1-11-1-2 | 1-3/16 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1"-11-1/2 | 1-3/16 | 1"-11-1/2 | https://referencesource.org/drill-tap-decimal-equivalents/straight-pipe-nps-1-11-1-2/ | [
"paired_value"
] | Straight Pipe (NPS) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | taper-pipe-npt-1-11-1-2 | 1-5/32 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1"-11-1/2 | 1-5/32 | 1"-11-1/2 | https://referencesource.org/drill-tap-decimal-equivalents/taper-pipe-npt-1-11-1-2/ | [
"paired_value"
] | Taper Pipe (NPT) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | national-fine-unf-1-14 | 15/16 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1"-14 | 15/16 | 1"-14 | https://referencesource.org/drill-tap-decimal-equivalents/national-fine-unf-1-14/ | [
"paired_value"
] | National Fine (UNF) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-16 | 6.6 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1/16 | 28 | 0.304 | 6.6 mm | 1/16 | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-16/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size"
] | 1-16 | .0625 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1/16" | .0625 | 1/16" | https://referencesource.org/drill-tap-decimal-equivalents/1-16/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-32 | .0313 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1/32" | .0313 | 1/32" | https://referencesource.org/drill-tap-decimal-equivalents/1-32/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-64 | .0156 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1/64" | .0156 | 1/64" | https://referencesource.org/drill-tap-decimal-equivalents/1-64/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-1-inch | 30.75 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1 inch | 11 | 1.309 | 30.75 mm | 1 inch | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-1-inch/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-taper-bspt-1-inch | 30mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 1 inch | 11 | 1.309 | 30.75 mm | 30mm | 1 inch | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-taper-bspt-1-inch/ | [
"paired_value"
] | British Standard Pipe Taper (BSPT) | null |
[
"record_type",
"thread_or_drill_size"
] | 1-mm | .0394 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.00mm | .0394 | 1 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | metric-coarse-1mm-x-25 | .75mm | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1mm x .25 | .75mm | 1mm x .25 | https://referencesource.org/drill-tap-decimal-equivalents/metric-coarse-1mm-x-25/ | [
"paired_value"
] | Metric Coarse | null |
[
"record_type",
"thread_or_drill_size"
] | 1-05-mm | .0413 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.05mm | .0413 | 1.05 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-05-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-1-mm | .0433 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.10mm | .0433 | 1.1 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-1-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | metric-coarse-1-1-x-25 | .85 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1.1 x .25 | .85 | 1.1 x .25 | https://referencesource.org/drill-tap-decimal-equivalents/metric-coarse-1-1-x-25/ | [
"paired_value"
] | Metric Coarse | null |
[
"record_type",
"thread_or_drill_size"
] | 1-15-mm | .0453 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.15mm | .0453 | 1.15 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-15-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-2-mm | .0472 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.20mm | .0472 | 1.2 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-2-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | metric-coarse-1-2-x-25 | .95 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1.2 x .25 | .95 | 1.2 x .25 | https://referencesource.org/drill-tap-decimal-equivalents/metric-coarse-1-2-x-25/ | [
"paired_value"
] | Metric Coarse | null |
[
"record_type",
"thread_or_drill_size"
] | 1-25-mm | .0492 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.25mm | .0492 | 1.25 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-25-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-3-mm | .0512 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.30mm | .0512 | 1.3 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-3-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-35-mm | .0531 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.35mm | .0531 | 1.35 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-35-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-4-mm | .0551 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.40mm | .0551 | 1.4 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-4-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | metric-coarse-1-4-x-3 | 1.1 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1.4 x .3 | 1.1 | 1.4 x .3 | https://referencesource.org/drill-tap-decimal-equivalents/metric-coarse-1-4-x-3/ | [
"paired_value"
] | Metric Coarse | null |
[
"record_type",
"thread_or_drill_size"
] | 1-45-mm | .0571 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.45mm | .0571 | 1.45 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-45-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-5-mm | .0591 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.50mm | .0591 | 1.5 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-5-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-55-mm | .0610 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.55mm | .0610 | 1.55 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-55-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-6-mm | .0630 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.60mm | .0630 | 1.6 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-6-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | metric-coarse-1-6-x-35 | 1.25 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1.6 x .35 | 1.25 | 1.6 x .35 | https://referencesource.org/drill-tap-decimal-equivalents/metric-coarse-1-6-x-35/ | [
"paired_value"
] | Metric Coarse | null |
[
"record_type",
"thread_or_drill_size"
] | 1-65-mm | .0650 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.65mm | .0650 | 1.65 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-65-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-7-mm | .0669 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.70mm | .0669 | 1.7 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-7-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | metric-coarse-1-7-x-35 | 1.35 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1.7 x .35 | 1.35 | 1.7 x .35 | https://referencesource.org/drill-tap-decimal-equivalents/metric-coarse-1-7-x-35/ | [
"paired_value"
] | Metric Coarse | [
{
"field": "paired_value",
"versions": [
{
"as_of": "2026-08-28T00:00:00",
"source": "https://www.victornet.com/reference/Tap_Drill.html",
"source_quote": "1.7 x .35 | 1.35",
"value": "1.35"
},
{
"as_of": "2026-08-28T00:00:00",
"source": "htt... |
[
"record_type",
"thread_or_drill_size"
] | 1-75-mm | .0689 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.75mm | .0689 | 1.75 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-75-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-8-mm | .0709 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.80mm | .0709 | 1.8 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-8-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | metric-coarse-1-8-x-35 | 1.45 | tap_drill | https://www.victornet.com/reference/Tap_Drill.html | 1.8 x .35 | 1.45 | 1.8 x .35 | https://referencesource.org/drill-tap-decimal-equivalents/metric-coarse-1-8-x-35/ | [
"paired_value"
] | Metric Coarse | null |
[
"record_type",
"thread_or_drill_size"
] | 1-85-mm | .0728 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.85mm | .0728 | 1.85 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-85-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-9-mm | .0748 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.90mm | .0748 | 1.9 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-9-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size"
] | 1-95-mm | .0768 | drill_decimal | https://www.victornet.com/reference/Sizes_Equivalents.html | 1.95mm | .0768 | 1.95 mm | https://referencesource.org/drill-tap-decimal-equivalents/1-95-mm/ | [
"paired_value"
] | null | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-parallel-bsp-2 | 57 mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 2" | 11 | 2.347 | 57 mm | 2" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-parallel-bsp-2/ | [
"paired_value"
] | British Standard Pipe Parallel (BSP) | null |
[
"record_type",
"thread_or_drill_size",
"thread_series"
] | british-standard-pipe-taper-bspt-2 | 56mm | tap_drill | https://www.newmantools.com/tapdrill.htm | 2" | 11 | 2.347 | 57 mm | 56mm | 2" | https://referencesource.org/drill-tap-decimal-equivalents/british-standard-pipe-taper-bspt-2/ | [
"paired_value"
] | British Standard Pipe Taper (BSPT) | null |
End of preview. Expand in Data Studio
Tap drill size and drill-size decimal equivalents
Canonical, always-current version: https://referencesource.org/drill-tap-decimal-equivalents/ Machine-readable: https://referencesource.org/drill-tap-decimal-equivalents/data.json — this mirror is a point-in-time copy.
- Last verified: 2026-08-28
- Stale after: 2031-08-27 (past this date, prefer the canonical copy — it re-verifies on a cadence this snapshot does not)
- Records: 570
Two related lookups machinists and hobbyists need together: (1) which tap drill to use for a given inch or metric thread (e.g. 1/4-20 UNC needs a #7 drill for approximately 75% thread engagement), and (2) the decimal-inch size of every number, letter, fraction and metric drill, so a shop can pick the nearest drill it actually owns. Two independent vendor sources are used for each table so a disagreement between them can be flagged rather than silently trusted. Answers 'what size do I drill before tapping 1/4-20', and 'what decimal is a #7 drill' — a complete range in one place beats looking up one size at a time.
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
Factual compilation with source citations. Tap drill sizes and drill decimal equivalents are standard machining facts (ANSI/ASME B1.1 practice), not the vendor's original expression; short attributed quotes link back to the published table.
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
- http://newmantools.com/decinch.htm
- https://www.victornet.com/reference/Sizes_Equivalents.html
- https://www.newmantools.com/tapdrill.htm
- https://www.victornet.com/reference/Tap_Drill.html
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/drill-tap-decimal-equivalents/
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