| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE AND |
| PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| STEEL COMP 1212 NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES LOCKING INSERT |
| AMS ASSN STD SINGLE MATERIAL RESPONSE NUT |
| SURFACE TREATMENT | CADMIUM OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| NUT STYLE | CLINCH |
| PILOT DIAMETER | 0.359 INCHES NOMINAL |
| PILOT LENGTH | 0.165 INCHES NOMINAL |
| NUT HEIGHT | 0.478 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.438 INCHES NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| NUT COUNTERBORE DEPTH | 0.165 INCHES NOMINAL NUT |
| COUNTERBORE DIAMETER | 0.280 INCHES NOMINAL NUT |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |