NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, temp_rating: 900.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF, overall_height: 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-719-5570, 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 | IRON ALLOY 660 OVERALL |
| nut_style | HEXAGON |
| temp_rating | 900.0 FAHRENHEIT NOMINAL DEGF |
| thread_class | 3B |
| thread_series | UNF |
| overall_height | 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.019 INCHES MINIMUM IN |
| surface_treatment | SILVER OVERALL |
| width_across_flats | 0.304 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| nominal_thread_size | 0.250 INCHES IN |
| NSN | 5310-00-719-5570 |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD SERIES | UNF |
| THREAD DIRECTION | RIGHT-HAND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES IN |
| WIDTH ACROSS FLATS | 0.304 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| WASHER OUTSIDE DIAMETER | 0.402 INCHES MINIMUM AND 0.412 INCHES MAXIMUM IN |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NUT STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |