NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 4340 OVERALL, nut_style: DOUBLE HEXAGON, lubrication: DRY FILM LUBRICANT, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.428 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-931-8546, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| material | STEEL COMP 4340 OVERALL |
| nut_style | DOUBLE HEXAGON |
| lubrication | DRY FILM LUBRICANT |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.428 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN |
| hardness_rating | 38.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.070 INCHES NOMINAL IN |
| surface_treatment | CADMIUM OVERALL |
| width_across_flats | 0.424 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| NSN | 5310-00-931-8546 |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| MATERIAL | STEEL COMP 4340 OVERALL |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM |
| NOMINAL THREAD SIZE | 0.375 INCHES IN |
| SURFACE TREATMENT | CADMIUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| OVERALL HEIGHT | 0.428 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN |