| BEARING SURFACE FINISH | 125.0 MICROINCHES |
| BEARING SURFACE TYPE | CHAMFERED |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5640 ASSN STD ALL MATERIAL RESPONSES NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES LOCKING INSERT |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| MATERIAL | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X NUT |
| NOMINAL THREAD SIZE | 1.250 INCHES |
| NUT STYLE | HEXAGON |
| NUT HEIGHT | 1.610 INCHES MINIMUM AND 1.672 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 1.973 INCHES MINIMUM AND 2.008 INCHES MAXIMUM |
| SURFACE TREATMENT | PASSIVATE OVERALL EXCEPT INSERT |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 7 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |