| BEARING SURFACE TYPE | CHAMFERED |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD SIZE | 0.1640 INCHES |
| NUT HEIGHT | 0.172 INCHES NOMINAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,HEX,SELF-LOCKING HEAT AND CORROSION RESISTANT STEEL |
| SPECIAL FEATURES | LOCKING INSERT TO BE NYLON; HEAT TREATED TO 160,000 PSI MIN TENSILE STRENGTH UNS S56286; NUT SHALL BE PASSIVATED IAW QQ-P-35; TYPE 2 OR TYPE 8 |
| WIDTH ACROSS FLATS | 0.334 INCHES MINIMUM AND 0.346 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 32 |