| FIRST END STYLE | SQUARE |
| FIRST STEP DIAMETER | 0.470 INCHES MINIMUM AND 0.471 INCHES MAXIMUM |
| FIRST STEP LENGTH | 0.500 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
| HEAD STYLE | FLAT |
| HEIGHT | 0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-637,TEMPER HARD FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OR COPPER ALLOY 462 OVERALL |
| PIN HEAD DIAMETER | 0.780 INCHES MINIMUM AND 0.800 INCHES MAXIMUM |
| SECOND STEP DIAMETER | 0.389 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| SECOND STEP LENGTH | 0.460 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| STYLE DESIGNATOR | SHOULDER |
| UNDER HEAD LENGTH | 1.120 INCHES MINIMUM AND 1.140 INCHES MAXIMUM |