| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL OVERALL |
| NUT STYLE | HEXAGON |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| BEARING SURFACE TYPE | CHAMFERED |
| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| THREAD QUANTITY PER INCH | 16 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J995,GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE II,CLASS 2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| NUT HEIGHT | 0.320 INCHES MINIMUM AND |
| 0.415 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.551 INCHES MINIMUM AND |
| 0.564 INCHES MAXIMUM |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| BEARING SURFACE FINISH | 125.0 MICROINCHES |
| SPECIFICATION/STANDARD DATA | 81349-MIL-DTL-45913/4A GOVERNMENT SPECIFICATION |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-DTL-45913/4A |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M45913/4-6CG8C |