| FASTENER LENGTH | 0.188 INCHES NOMINAL |
| HEAD HEIGHT | 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM |
| HEAD STYLE | OVAL/TRUSS |
| HEAD MAJOR DIAMETER | 0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM |
| HEAT TREATMENT | QUARTER HARD OVERALL |
| HOLE DEPTH | 0.064 INCHES NOMINAL |
| HOLE DIAMETER | 0.062 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-321,1/4 H FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | COPPER ALLOY 260 OR COPPER ALLOY 270 OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 12 TYPE AND 3 CLASS AND F GRADE |
| SHANK DIAMETER | 0.085 INCHES MINIMUM AND 0.089 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |
| SHEAR STRENGTH | 35000 DOUBLE POUNDS PER SQUARE INCH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-N-290 CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | NICKEL OVERALL |