| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.425 INCHES NOMINAL |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6349 NATIONAL STD ALL MATERIAL RESPONSES OR |
| AMS6382 NATIONAL STD ALL MATERIAL RESPONSES OR |
| AMS6415 NATIONAL STD ALL MATERIAL RESPONSES OR |
| 6484 NATIONAL STD ALL MATERIAL RESPONSES OR |
| AMS6322 NATIONAL STD ALL MATERIAL RESPONSES OR |
| AMS6325 NATIONAL STD ALL MATERIAL RESPONSES OR |
| AMS6327 NATIONAL STD ALL MATERIAL RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416 NATIONAL STD ALL TREATMENT RESPONSES OVERALL |
| HEAD HEIGHT | 0.125 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.429 INCHES MINIMUM AND |
| 0.439 INCHES MAXIMUM |
| GRIP DIAMETER | 0.3110 INCHES MINIMUM AND |
| 0.3120 INCHES MAXIMUM |