| FIRST END STYLE | SQUARE |
| FIRST END LOCATION | SHORT SHANK END |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| OVERALL LENGTH | 1.260 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OVERALL |
| SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| SECOND SHANK DIAMETER | 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| SECOND SHANK LENGTH | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| SHANK DIAMETER | 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| SHANK LENGTH | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
| SHOULDER DIAMETER | 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| STYLE DESIGNATOR | SHOULDER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232 TYPE M CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-P-16232 TYPE Z CLASS 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALL |