| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | PLASTIC POLYAMIDE LOCKING INSERT |
| STEEL COMP 301 OVERALL EXCEPT INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | PASSIVATE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| NUT STYLE | CAP |
| NUT HEIGHT | 0.340 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.3020 INCHES MINIMUM AND |
| 0.3125 INCHES MAXIMUM |
| BEARING SURFACE TYPE | CHAMFERED OR |
| WASHER FACED |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN OR |
| PREVAILING TORQUE WITH NONMETALLIC INSERT |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| BEARING SURFACE FINISH | 110.0 MICROINCHES |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS51865-1C |