NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, temp_rating: 850.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.266 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 5310-01-486-1024, 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 | 850.0 FAHRENHEIT NOMINAL DEGF |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.266 INCHES MAXIMUM IN |
| hardness_rating | 32.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.040 INCHES MINIMUM IN |
| width_across_flats | 0.367 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN |
| nominal_thread_size | 0.312 INCHES IN |
| NSN | 5310-01-486-1024 |
| NUT STYLE | HEXAGON |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5525 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5732 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| WASHER OUTSIDE DIAMETER | 0.520 INCHES MAXIMUM IN |
| OVERALL HEIGHT | 0.266 INCHES MAXIMUM IN |
| NOMINAL THREAD SIZE | 0.312 INCHES IN |
| THREAD CLASS | 3B |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| WIDTH ACROSS FLATS | 0.367 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN |