| BEARING SURFACE TYPE | CHAMFERED |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-P-17091B MIL SPEC SINGLE MATERIAL RESPONSE LOCKING INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/4,T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6,T851 FED SPEC 2ND MATERIAL RESPONSE NUT |
| MATERIAL | ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 NUT |
| MATERIAL | PLASTIC POLYAMIDE (NYLON) LOCKING INSERT |
| NOMINAL THREAD SIZE | 0.438 INCHES |
| NUT HEIGHT | 0.250 INCHES NOMINAL |
| NUT STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.684 INCHES MINIMUM AND 0.691 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | ANODIZE OVERALL EXCEPT INSERT |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3B |
| THREAD SERIES | UNF |
| THREAD QUANTITY PER INCH | 20 |