| COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.690 INCHES MINIMUM AND 0.698 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAT TREATMENT | T-4 SOLUTION HEAT TREATED OVERALL |
| IDENTIFICATION CODE COLOR | YELLOW |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-430,T4,UNS-A92117 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 2117 OVERALL |
| SHANK DIAMETER | 0.374 INCHES MINIMUM AND 0.378 INCHES MAXIMUM |
| SHANK STYLE | STRAIGHT W/RADIUS CHAMFERED TIP |
| SHEAR STRENGTH | 26000 SINGLE POUNDS PER SQUARE INCH |
| SPECIFICATION/STANDARD DATA | 96906-MS20426 GOVERNMENT STANDARD AND 88044-AN426/CANCELLED/ GOVERNMENT STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541,CLASS1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE FILM OVERALL |