| FIRST END STYLE | SQUARE |
| FIRST STEP LENGTH | 0.417 INCHES MINIMUM AND 0.427 INCHES MAXIMUM |
| FIRST STEP DIAMETER | 0.905 INCHES MINIMUM AND 0.906 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| HEIGHT | 0.187 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1020 OVERALL |
| SPECIAL FEATURES | 0.250-20 UNC 3B THD IN HEAD,0.219 IN. DIA 3 HOLES EQUALLY SPACED IN HEAD |
| PIN HEAD DIAMETER | 1.615 INCHES MINIMUM AND 1.620 INCHES MAXIMUM |
| SECOND STEP DIAMETER | 0.7499 INCHES MINIMUM AND 0.7503 INCHES MAXIMUM |
| SECOND STEP LENGTH | 0.448 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232,TY M CL 1 MIL SPEC 1ST TREATMENT RESPONSE AND 1303,CAGEC 10001 MFR REF 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE AND PAINT OVERALL |
| UNDER HEAD LENGTH | 0.875 INCHES MINIMUM AND 0.885 INCHES MAXIMUM |