| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.528 INCHES NOMINAL |
| FASTENER LENGTH | 3.263 INCHES MINIMUM AND |
| 3.293 INCHES MAXIMUM |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| HEAD STYLE | DISHED HEXAGON |
| HEAD HEIGHT | 0.250 INCHES MINIMUM AND |
| 0.265 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND |
| 0.752 INCHES MAXIMUM |
| GRIP LENGTH | 2.740 INCHES MINIMUM AND |
| 2.760 INCHES MAXIMUM |
| GRIP DIAMETER | 0.4990 INCHES MINIMUM AND |
| 0.4995 INCHES MAXIMUM |
| SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| 125.0 MICROINCHES GRIP |
| 32.0 MICROINCHES THREADS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT,TENSION,HEX HEAD,CLOSE TOLERANCE |