42FLW720: NUT,SELF-LOCKING,EXTENDED WASHER.
NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: DOUBLE HEXAGON, lubrication: DRY FILM LUBRICANT, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.496 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN. This part is cataloged in the U.S.
Government catalog under NSN 5310-01-455-8291, 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 OVERALL |
| nut_style | DOUBLE HEXAGON |
| lubrication | DRY FILM LUBRICANT |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.496 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN |
| hardness_rating | 40.0 ROCKWELL C MAXIMUM |
| locking_feature | FREE-RUNNING ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| surface_treatment | CADMIUM OVERALL |
| width_across_flats | 0.533 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| NSN | 5310-01-455-8291 |
| LUBRICATION | DRY FILM LUBRICANT |
| OVERALL HEIGHT | 0.496 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN |
| WASHER OUTSIDE DIAMETER | 0.713 INCHES MINIMUM AND 0.763 INCHES MAXIMUM IN |
| WIDTH ACROSS FLATS | 0.533 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TY I, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| HARDNESS RATING | 40.0 ROCKWELL C MAXIMUM |
| WASHER THICKNESS | 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6280 ASSN STD SINGLE MATERIAL RESPONSE OR MS 6300 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |