Bolt Thread Dimensions: UNF
Bolt thread dimensions — UNC, UNF, ISO coarse/fine thread series with pitch, tensile stress area, and threads per inch
| thread series | nominal diameter | gross area in2 (in2) | minor diameter in (in) | nominal size | pitch mm (mm) | root area in2 (in2) | tensile stress area in2 (in2) | tensile stress area mm2 (mm2) | threads per inch (threads/in) |
|---|---|---|---|---|---|---|---|---|---|
| UNF | 0.06 | 0.0028 | 0.0465 | #0 | 0.3175 | 0.0017 | 0.00218 | 1.41 | 80 |
| UNF | 0.073 | 0.0042 | 0.058 | #1 | 0.3528 | 0.0022 | 0.00278 | 1.79 | 72 |
| UNF | 0.086 | 0.0058 | 0.0691 | #2 | 0.3969 | 0.0032 | 0.00394 | 2.54 | 64 |
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