| EFFECTIVE LENGTH | 0.527 INCHES MINIMUM AND 0.534 INCHES MAXIMUM |
| DIAMETER | 0.1881 INCHES MINIMUM AND 0.1891 INCHES MAXIMUM |
| FIRST END STYLE | SQUARE |
| HEAD STYLE | FLAT |
| HEIGHT | 0.025 INCHES MINIMUM AND 0.030 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| PIN HEAD DIAMETER | 0.250 INCHES NOMINAL |
| STYLE DESIGNATOR | GROOVE |
| SURFACE TREATMENT | CHROMIUM OVERALL |
| UNDER HEAD LENGTH | 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.018 INCHES MINIMUM AND 0.020 INCHES MAXIMUM |
| UNDERCUT DIAMETER | 0.1735 INCHES MINIMUM AND 0.1765 INCHES MAXIMUM |