| FASTENER LENGTH | 3.500 INCHES NOMINAL |
| HEAD STYLE | FLAT COUNTERSUNK |
| HEAD DIAMETER | 0.534 INCHES MINIMUM AND 0.597 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MINIMUM TENSILE STRENGTH | 50000 POUNDS PER SQUARE INCH |
| NONMACHINE THREAD STYLE | WOOD SCREW (TYPE WD) |
| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| NONMACHINE NOMINAL THREAD DIAMETER | 0.294 INCHES |
| MATERIAL | COPPER ALLOY 651 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C 591 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |