| COUNTERBORE DIAMETER | 0.409 INCHES MINIMUM AND 0.413 INCHES MAXIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | SOLUBLE LUBRICANT |
| OVERALL HEIGHT | 0.470 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/9,TEMPER T73 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 7075 OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| NUT COUNTERBORE DEPTH | 0.117 INCHES MINIMUM AND 0.127 INCHES MAXIMUM NUT |
| NUT STYLE | HEXAGON |
| SPECIAL FEATURES | COLOR RED |
| WASHER OUTSIDE DIAMETER | 0.642 INCHES MINIMUM AND 0.649 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |