| BEARING SURFACE TYPE | CHAMFERED |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J995 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| MATERIAL | STEEL COMP 303 OVERALL EXCEPT INSERT |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| NUT HEIGHT | 0.219 INCHES MINIMUM AND 0.239 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, SELF-LOCKING, HEX |
| SPECIAL FEATURES | MINIMUM ULTIMATE TENSILE STRENGTH OF 70 KSI AND SHALL BE NON-MAGNETIC |
| WIDTH ACROSS FLATS | 0.336 INCHES MINIMUM AND 0.345 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | BLACK OXIDE OVERALL EXCEPT INSERT |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |