ASME B18.31.3 Threaded Rods
ASME B18.31.3 Dimensions (mm)
| Size | Nominal Diameter | Size and Threads/Inch | |||
|---|---|---|---|---|---|
| UNC | 8UN | UNF | Acme | ||
| #4 | 0.1120 | 4-40 | ... | 4-48 | ... |
| #5 | 0.1250 | 5-40 | ... | 5-44 | ... |
| #6 | 0.1380 | 6-32 | ... | 6-40 | ... |
| #8 | 0.1640 | 8-32 | ... | 8-36 | ... |
| #10 | 0.1900 | 10-24 | ... | 10-32 | ... |
| #12 | 0.2160 | 12-24 | ... | 12-28 | ... |
| 1/4 | 0.2500 | 1/4-20 | ... | 1/4-28 | 1/4-16 |
| 5/16 | 0.3125 | 5/16-18 | ... | 5/16-24 | 5/16-14 |
| 3/8 | 0.3750 | 3/8-16 | ... | 3/8-24 | 3/8-12 |
| 7/16 | 0.4370 | 7/16-14 | ... | 7/16-20 | 7/16-12 |
| 1/2 | 0.5000 | 1/2-13 | ... | 1/2-20 | 1/2-10 |
| 9/16 | 0.5620 | 9/16-12 | ... | 9/16-18 | ... |
| 5/8 | 0.6250 | 5/8-11 | ... | 5/8-18 | 5/8-8 |
| 3/4 | 0.7500 | 3/4-10 | ... | 3/4-16 | 3/4-6 |
| 7/8 | 0.8750 | 7/8-9 | ... | 7/8-14 | 7/8-6 |
| 1 | 1.0000 | 1-8 | ... | 1-12 or 1-14 UNS | 1-5 |
| 1 1/8 | 1.1250 | 1 1/8-7 | 1 1/8-8 | 1 1/8-12 | 1 1/8-5 |
| 1 1/4 | 1.2500 | 1 1/4-7 | 1 1/4-8 | 1 1/4-12 | 1 1/4-5 |
| 1 3/8 | 1.3750 | 1 3/8-6 | 1 3/8-8 | 1 3/8-12 | 1 3/8-4 |
| 1 1/2 | 1.5000 | 1 1/2-6 | 1 1/2-8 | 1 1/2-12 | 1 1/2-4 |
| 1 5/8 | 1.6250 | ... | 1 5/8-8 | ... | ... |
| 1 3/4 | 1.7500 | 1 3/4-5 | 1 3/4-8 | ... | 1 3/4-4 |
| 1 7/8 | 1.8750 | ... | 1 7/8-8 | ... | ... |
| 2 | 2.0000 | 2-4.5 | 2-8 | ... | 2-4 |
| 2 1/4 | 2.2500 | 2 1/4-4.5 | 2 1/4-8 | ... | 2 1/4-3 |
| 2 1/2 | 2.5000 | 2 1/2-4 | 2 1/2-8 | ... | 2 1/2-3 |
| 2 3/4 | 2.7500 | 2 3/4-4 | 2 3/4-8 | ... | 2 3/4-3 |
| 3 | 3.0000 | 3-4 | 3-8 | ... | 3-2 |
| 3 1/4 | 3.2500 | 3 1/4-4 | 3 1/4-8 | ... | ... |
| 3 1/2 | 3.5000 | 3 1/2-4 | 3 1/2-8 | ... | 3 1/2-2 |
| 3 3/4 | 3.7500 | 3 3/4-4 | 3 3/4-8 | ... | ... |
| 4 | 4.0000 | 4-4 | 4-8 | ... | 4-2 |
| 4 1/2 | 4.5000 | ... | ... | ... | 4 1/2-2 |
| 5 | 5.0000 | ... | ... | ... | 5-2 |
ASME B18.31.3 Dimensions (Inch)
| Size | Nominal Diameter | Size and Threads/Inch | |||
|---|---|---|---|---|---|
| UNC | 8UN | UNF | Acme | ||
| #4 | 2.845 | 4-40 | ... | 4-48 | ... |
| #5 | 3.175 | 5-40 | ... | 5-44 | ... |
| #6 | 3.505 | 6-32 | ... | 6-40 | ... |
| #8 | 4.166 | 8-32 | ... | 8-36 | ... |
| #10 | 4.826 | 10-24 | ... | 10-32 | ... |
| #12 | 5.486 | 12-24 | ... | 12-28 | ... |
| 1/4 | 6.350 | 1/4-20 | ... | 1/4-28 | 1/4-16 |
| 5/16 | 7.938 | 5/16-18 | ... | 5/16-24 | 5/16-14 |
| 3/8 | 9.525 | 3/8-16 | ... | 3/8-24 | 3/8-12 |
| 7/16 | 11.100 | 7/16-14 | ... | 7/16-20 | 7/16-12 |
| 1/2 | 12.700 | 1/2-13 | ... | 1/2-20 | 1/2-10 |
| 9/16 | 14.275 | 9/16-12 | ... | 9/16-18 | ... |
| 5/8 | 15.875 | 5/8-11 | ... | 5/8-18 | 5/8-8 |
| 3/4 | 19.050 | 3/4-10 | ... | 3/4-16 | 3/4-6 |
| 7/8 | 22.225 | 7/8-9 | ... | 7/8-14 | 7/8-6 |
| 1 | 25.400 | 1-8 | ... | 1-12 or 1-14 UNS | 1-5 |
| 1 1/8 | 28.575 | 1 1/8-7 | 1 1/8-8 | 1 1/8-12 | 1 1/8-5 |
| 1 1/4 | 31.750 | 1 1/4-7 | 1 1/4-8 | 1 1/4-12 | 1 1/4-5 |
| 1 3/8 | 34.925 | 1 3/8-6 | 1 3/8-8 | 1 3/8-12 | 1 3/8-4 |
| 1 1/2 | 38.100 | 1 1/2-6 | 1 1/2-8 | 1 1/2-12 | 1 1/2-4 |
| 1 5/8 | 41.275 | ... | 1 5/8-8 | ... | ... |
| 1 3/4 | 44.450 | 1 3/4-5 | 1 3/4-8 | ... | 1 3/4-4 |
| 1 7/8 | 47.625 | ... | 1 7/8-8 | ... | ... |
| 2 | 50.800 | 2-4.5 | 2-8 | ... | 2-4 |
| 2 1/4 | 57.150 | 2 1/4-4.5 | 2 1/4-8 | ... | 2 1/4-3 |
| 2 1/2 | 63.500 | 2 1/2-4 | 2 1/2-8 | ... | 2 1/2-3 |
| 2 3/4 | 69.850 | 2 3/4-4 | 2 3/4-8 | ... | 2 3/4-3 |
| 3 | 76.200 | 3-4 | 3-8 | ... | 3-2 |
| 3 1/4 | 82.550 | 3 1/4-4 | 3 1/4-8 | ... | ... |
| 3 1/2 | 88.900 | 3 1/2-4 | 3 1/2-8 | ... | 3 1/2-2 |
| 3 3/4 | 95.250 | 3 3/4-4 | 3 3/4-8 | ... | ... |
| 4 | 101.600 | 4-4 | 4-8 | ... | 4-2 |
| 4 1/2 | 114.300 | ... | ... | ... | 4 1/2-2 |
| 5 | 127.000 | ... | ... | ... | 5-2 |