| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | ALUMINUM ALLOY 2017 OR |
| ALUMINUM ALLOY 2024 OR |
| ALUMINUM ALLOY 6061 OR |
| ALUMINUM ALLOY 6262 OVERALL EXCEPT INSERT |
| NUT STYLE | HEXAGON |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| BEARING SURFACE TYPE | CHAMFERED |
| THREAD SERIES | UNF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 2B |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/5 FED SPEC SINGLE MATERIAL RESPONSE OR |
| QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OR |
| QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OR |
| QQ-A-225/10 FED SPEC SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT | ANODIZE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| NUT HEIGHT | 0.298 INCHES MINIMUM AND |
| 0.328 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.428 INCHES MINIMUM AND |
| 0.439 INCHES MAXIMUM |
| LUBRICATION | DRY FILM LUBRICANT |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| BEARING SURFACE FINISH | 125.0 MICROINCHES |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-DTL-M45913/1 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M45913/1-4FAA |