| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.225 INCHES MINIMUM AND 0.247 INCHES MAXIMUM |
| HEAT TREATMENT | ANNEALED OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL |
| SHANK DIAMETER | 0.155 INCHES MINIMUM AND 0.160 INCHES MAXIMUM |
| SHANK STYLE | STRAIGHT |
| SHEAR STRENGTH | 49000 SINGLE POUNDS PER SQUARE INCH |