| COUNTERSINK ANGLE | 154.0 DEGREES NOMINAL |
| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD HEIGHT | 0.032 INCHES MINIMUM AND 0.042 INCHES MAXIMUM |
| HEAD STYLE | COUNTERSUNK W/ REVERSE CHAMFER |
| HEAD MAJOR DIAMETER | 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM |
| HEAT TREATMENT | ANNEALED OVERALL |
| HOLE DEPTH | 0.093 INCHES MINIMUM |
| HOLE DIAMETER | 0.046 INCHES MINIMUM AND 0.051 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 400 OVERALL |
| MINIMUM TENSILE STRENGTH | 49000 POUNDS PER SQUARE INCH |
| SHANK DIAMETER | 0.093 INCHES MINIMUM AND 0.098 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |