| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | IRON ALLOY 660 NUT |
| IRON ALLOY 660 WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5732 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS5737 ASSN STD 2ND MATERIAL RESPONSE NUT |
| AMS5525 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| SURFACE TREATMENT | PASSIVATE NUT |
| PASSIVATE WASHER |
| NUT STYLE | HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.460 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.280 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.305 INCHES MINIMUM AND |
| 0.313 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| SPECIAL FEATURES | UPPER THREADED PORTION FORMED OUT OF ROUND TO PROVIDE SELF LOCKING ACTION |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT - 6 POINT, CAPTIVE WASHER, SELF-LOCKING |