NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 550.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System under NSN 5310-00-917-1989, 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 | HEXAGON |
| lubrication | DRY FILM LUBRICANT |
| temp_rating | 550.0 FAHRENHEIT NOMINAL DEGF |
| thread_class | 3B |
| thread_series | UNF |
| overall_height | 0.328 INCHES MAXIMUM IN |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| surface_treatment | CADMIUM OVERALL |
| width_across_flats | 0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN |
| NSN | 5310-00-917-1989 |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| TEMP RATING | 550.0 FAHRENHEIT NOMINAL DEGF |
| NUT STYLE | HEXAGON |
| LUBRICATION | DRY FILM LUBRICANT |
| SURFACE TREATMENT | CADMIUM OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES IN |
| THREAD CLASS | 3B |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNF |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |