| BEARING SURFACE TYPE | CHAMFERED |
| HARDNESS RATING | 35.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| NUT HEIGHT | 0.427 INCHES MINIMUM AND 0.573 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | STEEL ALLOY GR8 PER SAE J995 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,SELF-LOCKING,HEXAGON,ALL-METAL LOCKING FEATURE UNC/UNF-2B |
| THREAD QUANTITY PER INCH | 13 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.736 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 81349-MIL-DTL-45913/2A GOVERNMENT SPECIFICATION |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TYII CL2 OR 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2B |