Common
| Size [1] | DIA [in] [2] | DIA [mm] [3] |
|---|---|---|
| #0 | 0.0600 | 1.52 |
| M1.6 | 0.0630 | 1.60 |
| #1 | 0.0730 | 1.85 |
| M2 | 0.0787 | 2.00 |
| #2 | 0.0860 | 2.18 |
| M2.5 | 0.0984 | 2.50 |
| #3 | 0.0990 | 2.51 |
| #4 | 0.1120 | 2.84 |
| M3 | 0.1181 | 3.00 |
| #5 | 0.1250 | 3.18 |
| M3.5 | 0.1378 | 3.50 |
| #6 | 0.1380 | 3.51 |
| M4 | 0.1575 | 4.00 |
| #8 | 0.1640 | 4.17 |
| #10 | 0.1900 | 4.83 |
| M5 | 0.1969 | 5.00 |
| M6 | 0.2362 | 6.00 |
| 1/4 | 0.2500 | 6.35 |
| 5/16 | 0.3125 | 7.94 |
| M8 | 0.3150 | 8.00 |
| 3/8 | 0.3750 | 9.53 |
| M10 | 0.3937 | 10.00 |
| 7/16 | 0.4375 | 11.11 |
| M12 | 0.4724 | 12.00 |
| 1/2 | 0.5000 | 12.70 |
| M14 | 0.5512 | 14.00 |
| 5/8 | 0.6250 | 15.88 |
| M16 | 0.6299 | 16.00 |
| 3/4 | 0.7500 | 19.05 |
| M20 | 0.7874 | 20.00 |
| M22 | 0.8661 | 22.00 |
| 7/8 | 0.8750 | 22.23 |
| M24 | 0.9449 | 24.00 |
| 1 | 1.0000 | 25.40 |
| M27 | 1.0630 | 27.00 |
| 1 1/8 | 1.1250 | 28.58 |
| M30 | 1.1811 | 30.00 |
| 1 1/4 | 1.2500 | 31.75 |
| 1 5/16 | 1.3125 | 33.34 |
| 1 3/8 | 1.3750 | 34.93 |
| M36 | 1.4173 | 36.00 |
| 1 1/2 | 1.5000 | 38.10 |
| 1 5/8 | 1.6250 | 41.28 |
| M42 | 1.6535 | 42.00 |
| 1 3/4 | 1.7500 | 44.45 |
| 1 7/8 | 1.8750 | 47.63 |
| M48 | 1.8898 | 48.00 |
| 2 | 2.0000 | 50.80 |
| M56 | 2.2047 | 56.00 |
| 2 1/4 | 2.2500 | 57.15 |
| 2 1/2 | 2.5000 | 63.50 |
| M64 | 2.5197 | 64.00 |
| 2 3/4 | 2.7500 | 69.85 |
| M72 | 2.8346 | 72.00 |
| 3 | 3.0000 | 76.20 |
| M80 | 3.1496 | 80.00 |
| 3 1/4 | 3.2500 | 82.55 |
| 3 1/2 | 3.5000 | 88.90 |
| M90 | 3.5433 | 90.00 |
| 3 3/4 | 3.7500 | 95.25 |
| M100 | 3.9370 | 100.00 |
| 4 | 4.0000 | 101.60 |
Uncommon
UNO thread
Thread commonly used for lamp shade fixtures and is equivalent to M33X1.5.
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Oberg, Jones, Horton, Ryffel, McCauley. (2020). Machinery’s Handbook 31 Digital Edition. Industrial Press eBookstore ↩︎
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Dimensions per ASME B1.1-2003 (R2018) in inches. ↩︎
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Dimensions per ASME B1.13M-2005 (R2015) in millimeters. ↩︎