| COUNTERBORE DIAMETER | 0.330 INCHES MINIMUM AND 0.335 INCHES MAXIMUM FIRST END |
| COUNTERBORE DIAMETER | 0.340 INCHES MAXIMUM WASHER |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| MATERIAL | IRON ALLOY 660 NUT |
| MATERIAL | STEEL CORROSION RESISTING WASHER |
| NOMINAL THREAD SIZE | 0.3125 INCHES |
| NUT COUNTERBORE DEPTH | 0.117 INCHES MINIMUM AND 0.127 INCHES MAXIMUM FIRST END |
| NUT STYLE | FLAT WITH TURNED UP EDGE |
| OVERALL HEIGHT | 0.430 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE WASHER |
| SURFACE TREATMENT | PASSIVATE WASHER |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNJF |
| WASHER OUTSIDE DIAMETER | 0.560 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.369 INCHES MINIMUM AND 0.378 INCHES MAXIMUM |