| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD HEIGHT | 0.042 INCHES MINIMUM AND 0.052 INCHES MAXIMUM |
| HEAD STYLE | FLAT/TINNER'S |
| HEAD MAJOR DIAMETER | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM |
| HEAT TREATMENT | QUARTER HARD OVERALL |
| HOLE DIAMETER | 0.100 INCHES MINIMUM AND 0.107 INCHES MAXIMUM |
| HOLE DEPTH | 0.120 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY 260 OR COPPER ALLOY 270 OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 12 TYPE AND 1 CLASS AND F GRADE |
| SHANK DIAMETER | 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |
| SHEAR STRENGTH | 35000 DOUBLE POUNDS PER SQUARE INCH |