| COUNTERSINK ANGLE | 148.0 DEGREES MINIMUM AND 150.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| HEAD HEIGHT | 0.041 INCHES MINIMUM AND 0.051 INCHES MAXIMUM |
| HEAD STYLE | COUNTERSUNK W/ REVERSE CHAMFER |
| 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 | 0.155 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-321 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | COPPER ALLOY 260 OR COPPER ALLOY 270 OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 13 TYPE OR F GRADE |
| SHANK DIAMETER | 0.182 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |
| SHEAR STRENGTH | 36000 DOUBLE POUNDS PER SQUARE INCH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |