| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.370 INCHES NOMINAL |
| FASTENER LENGTH | 2.105 INCHES MINIMUM AND |
| 2.135 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR |
| AMS5732 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR |
| AMS5737 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR |
| AMS5853 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2700, METHOD 1, TYPE 2 OR TYPE 8, CLASS 1 INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | 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 | 1.740 INCHES MINIMUM AND |
| 1.760 INCHES MAXIMUM |
| GRIP DIAMETER | 0.2490 INCHES MINIMUM AND |
| 0.2495 INCHES MAXIMUM |
| SPECIAL FEATURES | CLOSE TOLERANCE; SHORT THREAD, REDUCED MAJOR THREAD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, TENSION, HEX HEAD |