| COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD HEIGHT | 0.030 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| HEAD MAJOR DIAMETER | 0.260 INCHES MINIMUM AND 0.278 INCHES MAXIMUM |
| MATERIAL | ALUMINUM ALLOY 2117 OVERALL |
| SHANK DIAMETER | 0.124 INCHES MINIMUM AND 0.128 INCHES MAXIMUM |
| SHANK STYLE | STRAIGHT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OVERALL |