| EFFECTIVE LENGTH | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| DIAMETER | 0.1873 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM |
| FIRST END STYLE | SQUARE |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | FLAT |
| HEIGHT | 0.032 INCHES NOMINAL |
| MATERIAL | STEEL COMP 8640 OVERALL |
| PIN HEAD DIAMETER | 0.250 INCHES NOMINAL |
| 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 DIAMETER | 0.173 INCHES MINIMUM AND 0.177 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.017 INCHES MINIMUM AND 0.019 INCHES MAXIMUM |
| UNDER HEAD LENGTH | 0.436 INCHES NOMINAL |