
| Overall length Thread length | Thread+Neck length | Shank dia. | Size of square | Length of square |
| L ℓ | ℓn | Ds | K | ℓk |
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | ℓn (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | Type |
| 5/16-18UNC | GH3 | Y86412 | 2.5P | 3.543 | 0.866 | 1.378 | 0.318 | 0.238 | 0.375 | 3 | 2 |
| 5/16-24UNF | GH3 | Y86414 | 2.5P | 3.543 | 0.866 | 1.378 | 0.318 | 0.238 | 0.375 | 3 | 2 |
| 3/8-16UNC | GH3 GH5 | Y86416 Y86417 | 2.5P | 3.937 | 0.945 | 1.535 | 0.381 | 0.286 | 0.437 | 3 | 2 |
| 3/8-24UNF | GH3 | Y86418 | 2.5P | 3.543 | 0.787 | 1.535 | 0.381 | 0.286 | 0.437 | 3 | 2 |
| 7/16-14UNC | GH3 | Y86420 | 2.5P | 3.937 | 0.945 | - | 0.323 | 0.242 | 0.406 | 3 | 3 |
| 7/16-20UNF | GH3 | Y86422 | 2.5P | 3.937 | 0.945 | - | 0.323 | 0.242 | 0.406 | 3 | 3 |
| 1/2-13UNC | GH3 | Y86424 | 2.5P | 4.331 | 1.142 | - | 0.367 | 0.275 | 0.437 | 3 | 3 |
| 1/2-20UNF | GH3 | Y86426 | 2.5P | 3.937 | 0.866 | - | 0.367 | 0.275 | 0.437 | 3 | 3 |