| COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM |
| COUNTERSINK HEIGHT | 0.048 INCHES NOMINAL |
| FASTENER LENGTH | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| HEAD HEIGHT | 0.004 INCHES MINIMUM AND 0.007 INCHES MAXIMUM |
| HEAD STYLE | UNDERSIZED OVAL COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.293 INCHES MINIMUM AND 0.298 INCHES MAXIMUM |
| HEAD MINOR DIAMETER | 0.198 INCHES MINIMUM AND 0.208 INCHES MAXIMUM |
| HEAT TREATMENT | ANNEALED OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 400 OVERALL |
| SHANK DIAMETER | 0.186 INCHES MINIMUM AND 0.189 INCHES MAXIMUM |
| SHANK STYLE | STRAIGHT W/RADIUS CHAMFERED TIP |