| COUNTERSINK ANGLE | 118.5 DEGREES MINIMUM AND 121.5 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| HEAD HEIGHT | 0.044 INCHES NOMINAL |
| HEAD MAJOR DIAMETER | 0.256 INCHES MINIMUM AND 0.258 INCHES MAXIMUM |
| HEAD STYLE | COUNTERSUNK W/ REVERSE CHAMFER |
| HEAT TREATMENT | T-73 SOLUTION HEAT TREATED OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-430 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 7050 OVERALL |
| MINIMUM TENSILE STRENGTH | 68000 POUNDS PER SQUARE INCH |
| SHANK DIAMETER | 0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| SHANK STYLE | STRAIGHT W/RADIUS CHAMFERED TIP |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541,CL 1A,C MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMATE OVERALL |