| HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8740 OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.387 INCHES MINIMUM AND 0.392 INCHES MAXIMUM |
| NUT DIAMETER | 0.412 INCHES MINIMUM AND 0.432 INCHES MAXIMUM |
| PILOT LENGTH | 0.075 INCHES MINIMUM AND 0.095 INCHES MAXIMUM |
| PILOT DIAMETER | 0.304 INCHES MINIMUM AND 0.308 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNJF |