| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE OR |
| PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| ALUMINUM ALLOY 2017 NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 MIL SPEC 2ND MATERIAL RESPONSE LOCKING INSERT |
| AMS 4118 ASSN STD 1ST MATERIAL RESPONSE NUT |
| SURFACE TREATMENT | ANODIZE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| NUT STYLE | CLINCH |
| PILOT DIAMETER | 0.273 INCHES MINIMUM AND |
| 0.277 INCHES MAXIMUM |
| PILOT LENGTH | 0.159 INCHES MINIMUM AND |
| 0.171 INCHES MAXIMUM |
| NUT HEIGHT | 0.409 INCHES MINIMUM AND |
| 0.421 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.375 INCHES NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| NUT COUNTERBORE DEPTH | 0.165 INCHES NOMINAL NUT |
| COUNTERBORE DIAMETER | 0.220 INCHES NOMINAL NUT |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |