| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| NUT STYLE | HEXAGON |
| OVERALL HEIGHT | 0.340 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5736 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| MATERIAL | IRON ALLOY 660 NUT |
| MATERIAL | IRON ALLOY 660 WASHER |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| WASHER THICKNESS | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| WASHER OUTSIDE DIAMETER | 0.465 INCHES MINIMUM AND 0.475 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-L-8937 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | DISULFIDE MOLYBDENUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNJF |
| THREAD QUANTITY PER INCH | 28 |