| COUNTERSINK ANGLE | 148.0 DEGREES MINIMUM AND 150.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| HEAD HEIGHT | 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM |
| HEAD STYLE | COUNTERSUNK W/ REVERSE CHAMFER |
| HEAD MAJOR DIAMETER | 0.351 INCHES MINIMUM AND 0.367 INCHES MAXIMUM |
| HOLE DEPTH | 0.141 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
| HOLE DIAMETER | 0.133 INCHES MINIMUM AND 0.139 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 | 0.182 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |
| SHEAR STRENGTH | 36000 DOUBLE POUNDS PER SQUARE INCH |