| COUNTERSINK ANGLE | 148.0 DEGREES MINIMUM AND 150.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
| HEAD HEIGHT | 0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM |
| HEAD STYLE | COUNTERSUNK W/ REVERSE CHAMFER |
| HEAD MAJOR DIAMETER | 0.458 INCHES MINIMUM AND 0.478 INCHES MAXIMUM |
| HOLE DEPTH | 0.203 INCHES MINIMUM AND 0.234 INCHES MAXIMUM |
| HOLE DIAMETER | 0.173 INCHES MINIMUM AND 0.183 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY 270 OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 13 TYPE AND F GRADE |
| SHANK DIAMETER | 0.244 INCHES MINIMUM AND 0.252 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |
| SHEAR STRENGTH | 36000 DOUBLE POUNDS PER SQUARE INCH |