| BASE THICKNESS | 0.070 INCHES MINIMUM AND 0.082 INCHES MAXIMUM |
| BASE WIDTH | 0.710 INCHES MINIMUM AND 0.720 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS-5525 ASSN STD ALL MATERIAL RESPONSES OR AMS-5732 ASSN STD ALL MATERIAL RESPONSES OR AMS-5737 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OR NICKEL ALLOY OVERALL |
| NOMINAL THREAD SIZE | 0.4375 INCHES |
| NUT HEIGHT | 0.036 INCHES MINIMUM AND 0.051 INCHES MAXIMUM |
| NUT LENGTH | 1.010 INCHES MINIMUM AND 1.025 INCHES MAXIMUM |
| NUT STYLE | GANG CHANNEL, SELF LOCKING |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD PITCH DIAMETERS | +0.4050 TO 0.4091 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |