| BASE THICKNESS | 0.070 INCHES MINIMUM AND 0.082 INCHES MAXIMUM |
| BASE WIDTH | 0.710 INCHES MINIMUM AND 0.720 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.442 INCHES MINIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD SIZE | 0.438 INCHES |
| NUT COUNTERBORE DEPTH | 0.100 INCHES MINIMUM NUT |
| NUT LENGTH | 1.010 INCHES MINIMUM AND 1.025 INCHES MAXIMUM |
| NUT HEIGHT | 0.435 INCHES MAXIMUM |
| NUT STYLE | GANG CHANNEL, SELF LOCKING |
| SPECIFICATION/STANDARD DATA | 76301-ST3-445 MANUFACTURERS STANDARD |
| SURFACE TREATMENT | NICKEL OR COPPER OR NICKEL AND COPPER OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |