| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| FASTENER LENGTH | 1.591 INCHES MINIMUM AND 1.626 INCHES MAXIMUM |
| GRIP LENGTH | 1.016 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.555 INCHES MINIMUM AND 0.561 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 4130 OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| SHANK DIAMETER | 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| SHEAR STRENGTH | 95000 SINGLE POUNDS PER SQUARE INCH |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| WIDTH BETWEEN FLATS | 0.158 INCHES MINIMUM AND 0.162 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNJF |