| BEARING SURFACE TYPE | CHAMFERED |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE-J995, GRADE 8 NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,RIM |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.625 INCHES |
| NUT HEIGHT | 0.660 INCHES MINIMUM AND 0.690 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| SPECIAL FEATURES | HEXAGON LOCKING NUT WITH FLANGE; SURFACE COATING MAGNI 565 IAW GM7114M CHROME FREE; PROOF STRENGTH 150000 PSI MINIMUM; FLANGE DIAMETER 1.295 INCH MINIMUM 1.320 INCH MAXIMUM |
| WIDTH ACROSS FLATS | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNF |