| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL OVERALL |
| NUT STYLE | HEXAGON |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD SERIES | UNC |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3B |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J995 GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SAE-AMS-QQ-P-416 TYPE II, CLASS 2 OR 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| NUT HEIGHT | 0.117 INCHES MINIMUM AND |
| 0.191 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.332 INCHES MINIMUM AND |
| 0.345 INCHES MAXIMUM |
| HOLE CONFIGURATION STYLE | CONFIGURATION B |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| SUPPLEMENTARY FEATURES | NHA-135296; WEIGHT 0.1 LB; WIDTH ACROSS CORNERS IS 0.378 INCHES |
| SPECIFICATION/STANDARD DATA | M45913/4 GOVERNMENT STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, SELF-LOCKING, HEXAGON ALL-METAL LOCKING FEATURE, 250 DEGREE F, UNC-3B |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M45913/4-08CG5C |