| COUNTERSINK ANGLE | 150.0 DEGREES NOMINAL |
| FASTENER LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| HEAD HEIGHT | 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM |
| HEAD STYLE | COOPER'S (INCLUDED ANGLE - 135 DEG AND OVER) |
| HEAD MAJOR DIAMETER | 0.351 INCHES MINIMUM AND 0.367 INCHES MAXIMUM |
| HOLE DIAMETER | 0.133 INCHES MINIMUM AND 0.139 INCHES MAXIMUM |
| HOLE DEPTH | 0.141 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY 270 OVERALL |
| SHANK DIAMETER | 0.182 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |
| SHEAR STRENGTH | 36000 DOUBLE POUNDS PER SQUARE INCH |