| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.6250 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.829 INCHES MINIMUM AND |
| 0.858 INCHES MAXIMUM |
| FASTENER LENGTH | 2.201 INCHES MINIMUM AND |
| 2.211 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2700 METHOD 1, TYPE 2 OR TYPE 8, CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.312 INCHES MINIMUM AND |
| 0.327 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND |
| 0.940 INCHES MAXIMUM |
| SHOULDER SHAPE | ROUND OVERALL |
| SHOULDER DIAMETER | 0.7490 INCHES MINIMUM AND |
| 0.7495 INCHES MAXIMUM ALL SHOULDERS |
| SHOULDER LENGTH | 1.260 INCHES MINIMUM AND |
| 1.270 INCHES MAXIMUM ALL SHOULDERS |