| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | PLASTIC POLYAMIDE LOCKING INSERT |
| STEEL COMP 303 NUT |
| NUT STYLE | HEXAGON |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| BEARING SURFACE TYPE | CHAMFERED OR |
| WASHER FACED |
| THREAD SERIES | UNF |
| NOMINAL THREAD SIZE | 0.562 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 2B |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE NUT |
| SURFACE TREATMENT | PASSIVATE OVERALL EXCEPT INSERT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| HARDNESS RATING | 28.0 ROCKWELL C MAXIMUM |
| NUT HEIGHT | 0.626 INCHES MINIMUM AND |
| 0.656 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.861 INCHES MINIMUM AND |
| 0.877 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-45913/1 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M45913/1-9FS3 |