| BEARING SURFACE TYPE | CHAMFERED OR FLAT OR WASHER FACED |
| INSIDE WIDTH ACROSS FLATS | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT JAM HEX |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.625 INCHES |
| NUT HEIGHT | 0.363 INCHES MINIMUM AND 0.387 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| 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 |