| KNURL WIDTH | 0.250 INCHES NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY 360 OVERALL |
| NOMINAL THREAD SIZE | 0.138 INCHES |
| NUT DIAMETER | 0.289 INCHES MINIMUM AND 0.294 INCHES MAXIMUM |
| NUT THICKNESS | 0.365 INCHES MINIMUM AND 0.370 INCHES MAXIMUM |
| SMALL END DIAMETER | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| SPECIAL FEATURES | SLOT 0.031 IN. WIDE CUT INTO SMALL DIA TO DEPTH OF 0.165 IN.; SLOT CLOSED TO 0.016 IN. WIDE TO PROVIDE SELF-LOCKING FEATURE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PS 22,FSCM 55972 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | NICKEL OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNC |
| THREAD QUANTITY PER INCH | 32 |