| DIAMETER | 0.4070 INCHES MINIMUM AND 0.4075 INCHES MAXIMUM |
| DISTANCE FROM CENTERLINE TO FLAT | 0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| EFFECTIVE LENGTH | 0.876 INCHES MINIMUM AND 0.880 INCHES MAXIMUM |
| FIRST END STYLE | SQUARE |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | DEE |
| HEIGHT | 0.093 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OVERALL |
| PIN HEAD DIAMETER | 0.562 INCHES NOMINAL |
| PROPRIETARY CHARACTERISTICS | PACS |
| SECOND UNDERCUT DIAMETER | 0.375 INCHES NOMINAL |
| SECOND UNDERCUT WIDTH | 0.062 INCHES NOMINAL |
| SPECIAL FEATURES | FIRST UNDERCUT 0.030 IN. RADIUS |
| STYLE DESIGNATOR | GROOVE |
| SURFACE FINISH | 16.0 MICROINCHES OUTSIDE DIAMETER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMIUM OVERALL |
| UNDER HEAD LENGTH | 0.969 INCHES NOMINAL |
| UNDERCUT DIAMETER | 0.380 INCHES MINIMUM AND 0.384 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.028 INCHES MINIMUM AND 0.031 INCHES MAXIMUM |