| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.750 INCHES |
| THREAD QUANTITY PER INCH | 16 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5732 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS5737 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| NUT STYLE | DOUBLE HEXAGON |
| NUT HEIGHT | 0.310 INCHES MINIMUM |
| WIDTH ACROSS FLATS | 1.185 INCHES MAXIMUM |
| BEARING SURFACE TYPE | CHAMFERED OR |
| WASHER FACED |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| NUT COUNTERBORE DEPTH | 0.110 INCHES MINIMUM LOCKING INSERT |
| COUNTERBORE DIAMETER | 0.785 INCHES MAXIMUM LOCKING INSERT |
| BEARING SURFACE FINISH | 125.0 MICROINCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |