| BASE THICKNESS | 0.055 INCHES MINIMUM AND 0.071 INCHES MAXIMUM |
| BASE WIDTH | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5642 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT HEIGHT | 0.458 INCHES MINIMUM AND 0.473 INCHES MAXIMUM |
| NUT STYLE | GANG CHANNEL, SELF LOCKING |
| NUT LENGTH | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| TEMP RATING | 900.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNJF |