| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.580 INCHES MINIMUM AND |
| 0.590 INCHES MAXIMUM |
| FASTENER LENGTH | 3.860 INCHES NOMINAL |
| MATERIAL | STEEL COMP D6AC OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-8949 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837,TYPE 2,CLASS 1 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND |
| 49.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | ROUND W/WRENCH FLATS |
| HEAD DIAMETER | 1.060 INCHES NOMINAL |
| HEAD HEIGHT | 0.188 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.800 INCHES NOMINAL |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER DIAMETER | 0.7393 INCHES MINIMUM AND |
| 0.7400 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 3.270 INCHES MINIMUM AND |
| 3.280 INCHES MAXIMUM FIRST SHOULDER |
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.600 INCHES NOMINAL FIRST HOLE |
| SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM AND |
| 0.151 INCHES MAXIMUM FIRST HOLE |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 61174 |
| DESIGN CONTROL REFERENCE | A51B92518-11 |