NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: DOUBLE HEXAGON, temp_rating: 800.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF, overall_height: 0.314 INCHES MINIMUM AND 0.329 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 5310-00-472-8820, 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 303 OVERALL |
| nut_style | DOUBLE HEXAGON |
| temp_rating | 800.0 FAHRENHEIT NOMINAL DEGF |
| thread_class | 3B |
| thread_series | UNF |
| overall_height | 0.314 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| special_features | BEARING SURFACE SHALL BE SQUARE TO P.D. OF THREAD TO WITHIN 0.001 T.I.R. |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| surface_treatment | SILVER OVERALL |
| width_across_flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| NSN | 5310-00-472-8820 |
| THREAD QUANTITY PER INCH | 28 |
| NOMINAL THREAD SIZE | 0.250 INCHES IN |
| SPECIAL FEATURES | BEARING SURFACE SHALL BE SQUARE TO P.D. OF THREAD TO WITHIN 0.001 T.I.R. |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD SERIES | UNF |
| WIDTH ACROSS FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| MATERIAL | STEEL COMP 303 OVERALL |
| SURFACE TREATMENT | SILVER OVERALL |
| OVERALL HEIGHT | 0.314 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |