| MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 8740 OR |
| STEEL COMP E4340 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR |
| MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| SHEAR STRENGTH | 95000 SINGLE POUNDS PER SQUARE INCH |
| HEAD STYLE | COOPER'S |
| HEAD HEIGHT | 0.068 INCHES MINIMUM AND |
| 0.078 INCHES MAXIMUM |
| HEAD MAJOR DIAMETER | 0.475 INCHES MINIMUM AND |
| 0.505 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 40.0 DEGREES NOMINAL |
| SHANK STYLE | PIN-RIVET, STRAIGHT, THREADED |
| FASTENER LENGTH | 1.490 INCHES MINIMUM AND |
| 1.510 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.1270 INCHES MINIMUM AND |
| 0.1295 INCHES MAXIMUM |
| SHANK DIAMETER | 0.3422 INCHES MINIMUM AND |
| 0.3432 INCHES MAXIMUM |
| GRIP LENGTH | 1.0625 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| THREAD CLASS | 3A |
| THREAD QUANTITY PER INCH | 24 |
| THREAD DIRECTION | RIGHT-HAND |
| LUBRICATION | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| IDENTIFICATION CODE COLOR | BRONZE |