NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 NUT, nut_style: DOUBLE HEXAGON, temp_rating: 1200.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.396 INCHES MINIMUM AND 0.416 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 5310-01-341-7518, 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 NUT |
| nut_style | DOUBLE HEXAGON |
| temp_rating | 1200.0 FAHRENHEIT NOMINAL DEGF |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.396 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| precious_material | SILVER |
| surface_treatment | SILVER NUT |
| width_across_flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| NSN | 5310-01-341-7518 |
| WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WIDTH ACROSS FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| TEMP RATING | 1200.0 FAHRENHEIT NOMINAL DEGF |
| MATERIAL | IRON ALLOY 660 NUT |
| NOMINAL THREAD SIZE | 0.250 INCHES IN |
| PRECIOUS MATERIAL AND LOCATION | ENTIRE SURFACES SILVER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| SURFACE TREATMENT | SILVER NUT |