| BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-P-17091,TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| MATERIAL | ALUMINUM ALLOY 2017 NUT |
| MATERIAL | PLASTIC POLYAMIDE (NYLON) LOCKING INSERT |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT HEIGHT | 0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE NUT |
| SURFACE TREATMENT | ANODIZE NUT |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3B |
| THREAD SERIES | UNC |
| THREAD QUANTITY PER INCH | 18 |