| COUNTERSINK ANGLE | 88.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 1.359 INCHES MINIMUM AND 1.391 INCHES MAXIMUM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.569 INCHES MINIMUM AND 0.588 INCHES MAXIMUM |
| HEAT TREATMENT | ANNEALED OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-409 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1012 OVERALL |
| SHANK DIAMETER | 0.305 INCHES MINIMUM AND 0.317 INCHES MAXIMUM |
| SHANK STYLE | STRAIGHT |
| SHEAR STRENGTH | 44000 SINGLE POUNDS PER SQUARE INCH |