All 23 thread sizes per ASME B1.8. Click any row for full specifications, tolerances, and geometry.
| Designation | Diameter (in) | TPI | Specs |
|---|---|---|---|
| 1/4-16 STUB ACME | 0.25 | 16 TPI | |
| 5/16-14 STUB ACME | 0.3125 | 14 TPI | |
| 3/8-12 STUB ACME | 0.375 | 12 TPI | |
| 7/16-12 STUB ACME | 0.4375 | 12 TPI | |
| 1/2-10 STUB ACME | 0.5 | 10 TPI | |
| 5/8-8 STUB ACME | 0.625 | 8 TPI | |
| 3/4-6 STUB ACME | 0.75 | 6 TPI | |
| 7/8-6 STUB ACME | 0.875 | 6 TPI | |
| 1-5 STUB ACME | 1 | 5 TPI | |
| 1-1/8-5 STUB ACME | 1.125 | 5 TPI | |
| 1-1/4-5 STUB ACME | 1.25 | 5 TPI | |
| 1-3/8-4 STUB ACME | 1.375 | 4 TPI | |
| 1-1/2-4 STUB ACME | 1.5 | 4 TPI | |
| 1-3/4-4 STUB ACME | 1.75 | 4 TPI | |
| 2-4 STUB ACME | 2 | 4 TPI | |
| 2-1/4-3 STUB ACME | 2.25 | 3 TPI | |
| 2-1/2-3 STUB ACME | 2.5 | 3 TPI | |
| 2-3/4-3 STUB ACME | 2.75 | 3 TPI | |
| 3-2 STUB ACME | 3 | 2 TPI | |
| 3-1/2-2 STUB ACME | 3.5 | 2 TPI | |
| 4-2 STUB ACME | 4 | 2 TPI | |
| 4-1/2-2 STUB ACME | 4.5 | 2 TPI | |
| 5-2 STUB ACME | 5 | 2 TPI |
Showing 23 thread sizes • Standards: ASME B1.8