| DIAMETER | 0.3735 INCHES NOMINAL |
| FIRST END STYLE | CHAMFERED |
| FIRST END TAPER ANGLE | 44.5 DEGREES MINIMUM AND 45.5 DEGREES MAXIMUM |
| FIRST END TAPER LENGTH | 0.016 INCHES MINIMUM AND 0.047 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| HEIGHT | 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM |
| PIN HEAD DIAMETER | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| STYLE DESIGNATOR | GROOVE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232 TY M CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE OVERALL |
| UNDERCUT WIDTH | 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM |
| UNDER HEAD LENGTH | 2.984 INCHES MINIMUM AND 3.016 INCHES MAXIMUM |
| UNDERCUT DIAMETER | 0.328 INCHES MINIMUM AND 0.359 INCHES MAXIMUM |