| FIRST END STYLE | SQUARESQUARE |
| FIRST STEP LENGTH | 0.660 INCHES NOMINAL0.660 INCHES NOMINAL |
| FIRST STEP DIAMETER | 0.251 INCHES NOMINAL0.251 INCHES NOMINAL |
| HEAD STYLE | FLAT FILLISTERFLAT FILLISTER |
| HEIGHT | 0.110 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| PIN HEAD DIAMETER | 0.309 INCHES NOMINAL0.309 INCHES NOMINAL |
| SECOND STEP DIAMETER | 0.248 INCHES MINIMUM AND 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM0.249 INCHES MAXIMUM |
| SECOND STEP LENGTH | 0.060 INCHES NOMINAL0.060 INCHES NOMINAL |
| SPECIAL FEATURES | LARGER SHANK CHAMFERED 30 DEG TO SMALLER SHANK |
| UNDER HEAD LENGTH | 0.720 INCHES NOMINAL0.720 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDER |
| SURFACE FINISH | 16.0 MICROINCHES LARGE SHANK |