| FIRST END STYLE | SQUARESQUARE |
| FIRST STEP LENGTH | 0.070 INCHES NOMINAL0.070 INCHES NOMINAL |
| FIRST STEP DIAMETER | 0.311 INCHES NOMINAL0.311 INCHES NOMINAL |
| HEAD STYLE | FLAT FILLISTERFLAT FILLISTER |
| HEIGHT | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 303 OVERALL |
| PIN HEAD DIAMETER | 0.440 INCHES NOMINAL0.440 INCHES NOMINAL |
| SECOND STEP DIAMETER | 0.1550 INCHES NOMINAL0.1550 INCHES NOMINAL |
| SECOND STEP LENGTH | 0.445 INCHES NOMINAL0.445 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDER |
| SURFACE FINISH | 125.0 MICROINCHES OVERALL |
| UNDER HEAD LENGTH | 0.510 INCHES NOMINAL0.510 INCHES NOMINAL |