| COUNTERBORE DIAMETER | 0.165 INCHES NOMINAL NUT |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS4118 ASSN STD 1ST MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 MIL SPEC 2ND MATERIAL RESPONSE LOCKING INSERT |
| MATERIAL | ALUMINUM ALLOY 2017 NUT |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT COUNTERBORE DEPTH | 0.165 INCHES NOMINAL NUT |
| NUT HEIGHT | 0.347 INCHES MINIMUM AND 0.359 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PILOT LENGTH | 0.159 INCHES MINIMUM AND 0.171 INCHES MAXIMUM |
| PILOT DIAMETER | 0.220 INCHES MINIMUM AND 0.224 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.313 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | ANODIZE OVERALL EXCEPT INSERT |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3B |
| THREAD SERIES | UNC |
| THREAD QUANTITY PER INCH | 32 |