| EFFECTIVE LENGTH | 0.448 INCHES MINIMUM AND 0.458 INCHES MAXIMUM |
| DIAMETER | 0.2486 INCHES MINIMUM AND 0.2494 INCHES MAXIMUM |
| FIRST END STYLE | SQUARE |
| HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | FLAT |
| HEIGHT | 0.0525 INCHES MINIMUM AND 0.0725 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| PIN HEAD DIAMETER | 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| SPECIAL FEATURES | HEAD UNDER CUT DIA. 0.237 TO 0.242 IN UNDER CUT WIDTH OF HEAD 0.031 TO 0.062 |
| UNDER HEAD LENGTH | 0.5315 INCHES NOMINAL |
| UNDERCUT WIDTH | 0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM |
| UNDERCUT DIAMETER | 0.2285 INCHES MINIMUM |
| STYLE DESIGNATOR | GROOVE |
| SURFACE FINISH | 32.0 MICROINCHES LONG SHANK |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE OVERALL |