| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 0.206 INCHES MINIMUM AND 0.224 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD SIZE | 0.190 INCHES |
| NUT STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,SELF-LOCKING,EXTENDED WASHER,HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.470 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| WASHER THICKNESS | 0.044 INCHES MINIMUM AND 0.054 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.245 INCHES MINIMUM AND 0.252 INCHES MAXIMUM |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3BG |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |