| BASE THICKNESS | 0.050 INCHES MINIMUM AND 0.064 INCHES MAXIMUM |
| BASE WIDTH | 0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.317 INCHES MINIMUM BASE |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT COUNTERBORE DEPTH | 0.225 INCHES MINIMUM BASE |
| NUT LENGTH | 0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM |
| NUT HEIGHT | 0.480 INCHES MAXIMUM |
| NUT STYLE | GANG CHANNEL, SELF LOCKING |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |