| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.370 INCHES NOMINAL |
| FASTENER LENGTH | 1.73 INCHES MINIMUM AND |
| 1.76 INCHES MAXIMUM |
| MATERIAL | TITANIUM ALLOY UNS R56400 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS4928 NATIONAL STD SINGLE MATERIAL RESPONSE OR |
| AMS4967 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ALUMINUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS4006 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | DISHED HEXAGON |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND |
| 0.140 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.429 INCHES MINIMUM AND |
| 0.439 INCHES MAXIMUM |
| GRIP LENGTH | 1.365 INCHES MINIMUM AND |
| 1.385 INCHES MAXIMUM |
| GRIP DIAMETER | 0.2485 INCHES MINIMUM AND |
| 0.2495 INCHES MAXIMUM |
| SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| 125.0 MICROINCHES GRIP |
| 32.0 MICROINCHES THREADS |