NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: DOUBLE HEXAGON, temp_rating: 900.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.385 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 5310-01-218-9800, 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 | DOUBLE HEXAGON |
| temp_rating | 900.0 FAHRENHEIT MAXIMUM DEGF |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.385 INCHES MAXIMUM IN |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.035 INCHES MINIMUM IN |
| precious_material | SILVER |
| surface_treatment | SILVER OVERALL |
| width_across_flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| NSN | 5310-01-218-9800 |
| THREAD DIRECTION | RIGHT-HAND |
| TEMP RATING | 900.0 FAHRENHEIT MAXIMUM DEGF |
| THREAD QUANTITY PER INCH | 24 |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| NOMINAL THREAD SIZE | 0.312 INCHES IN |
| PRECIOUS MATERIAL AND LOCATION | OVERALL SILVER |
| PRECIOUS MATERIAL | SILVER |
| SURFACE TREATMENT | SILVER OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |