THREAD SERIES DESIGNATOR | UNJF |
NOMINAL THREAD DIAMETER | 0.625 INCHES |
THREAD QUANTITY PER INCH | 18 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.941 INCHES NOMINAL |
FASTENER LENGTH | 2.316 INCHES MINIMUM AND |
| 2.356 INCHES MAXIMUM |
MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 8740 OR |
| STEEL COMP 8735 OR |
| STEEL COMP 4130 OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR |
| MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR |
| MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OR |
| MIL-S-6758 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
MINIMUM TENSILE STRENGTH | 145000 POUNDS PER SQUARE INCH |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.390 INCHES MINIMUM AND |
| 0.422 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 1.053 INCHES MINIMUM AND |
| 1.066 INCHES MAXIMUM |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SHOULDER DIAMETER | 0.744 INCHES MINIMUM AND |
| 0.749 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER LENGTH | 1.385 INCHES MINIMUM AND |
| 1.405 INCHES MAXIMUM FIRST SHOULDER |