THREAD SERIES DESIGNATOR | UNJF |
NOMINAL THREAD DIAMETER | 0.375 INCHES |
THREAD QUANTITY PER INCH | 24 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.578 INCHES NOMINAL |
FASTENER LENGTH | 1.328 INCHES NOMINAL |
MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 4340 OR |
| STEEL COMP 8740 OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5625 MIL SPEC SINGLE MATERIAL RESPONSE OR |
| MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND |
| 43.0 ROCKWELL C MAXIMUM OVERALL |
HEAD STYLE | FLAT COUNTERSUNK |
HEAD DIAMETER | 0.513 INCHES MINIMUM AND |
| 0.566 INCHES MAXIMUM |
COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND |
| 101.0 DEGREES MAXIMUM |
INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
GRIP LENGTH | 0.740 INCHES MINIMUM AND |
| 0.760 INCHES MAXIMUM |
GRIP DIAMETER | 0.3735 INCHES MINIMUM AND |
| 0.3745 INCHES MAXIMUM |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.131 INCHES NOMINAL FIRST HOLE |
SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND |
| 0.116 INCHES MAXIMUM FIRST HOLE |