| COUNTERSINK ANGLE | 148.0 DEGREES MINIMUM AND 150.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.531 INCHES NOMINAL |
| HEAD HEIGHT | 0.030 INCHES MINIMUM AND 0.038 INCHES MAXIMUM |
| HEAD STYLE | COUNTERSUNK W/ REVERSE CHAMFER |
| HEAD MAJOR DIAMETER | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| HEAT TREATMENT | QUARTER HARD OVERALL |
| HOLE DEPTH | 0.094 INCHES NOMINAL |
| HOLE DIAMETER | 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM |
| 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 | 12 TYPE AND 3 CLASS AND F GRADE |
| SHANK DIAMETER | 0.118 INCHES MINIMUM AND 0.123 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |
| SHEAR STRENGTH | 35000 SINGLE POUNDS PER SQUARE INCH |
| SPECIAL FEATURES | COLOR BLACK |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |