| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 4142 OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| NUT DIAMETER | 0.545 INCHES MINIMUM AND 0.575 INCHES MAXIMUM |
| NUT HEIGHT | 0.365 INCHES MINIMUM AND 0.395 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PILOT LENGTH | 0.091 INCHES MINIMUM AND 0.097 INCHES MAXIMUM |
| PILOT DIAMETER | 0.493 INCHES MINIMUM AND 0.499 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 1,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNF |
| THREAD QUANTITY PER INCH | 24 |