FN26-820: NUT,PLAIN,EXTENDED WASHER,DOUBLE.
NUT,PLAIN,EXTENDED WASHER,DOUBLE. Key specifications include material: STEEL OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.680 INCHES MAXIMUM IN, hardness_rating: 41.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.
Government catalog under NSN 5310-00-213-9495, 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 OVERALL |
| nut_style | DOUBLE HEXAGON |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.680 INCHES MAXIMUM IN |
| hardness_rating | 41.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| special_features | HIGHLY STRESSED CRITICAL APPLICATION LANDING GEAR COMPONENT |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.048 INCHES MINIMUM IN |
| surface_treatment | CADMIUM OVERALL |
| width_across_flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| nominal_thread_size | 0.500 INCHES IN |
| NSN | 5310-00-213-9495 |
| OVERALL HEIGHT | 0.680 INCHES MAXIMUM IN |
| WASHER OUTSIDE DIAMETER | 0.828 INCHES MAXIMUM IN |
| WIDTH ACROSS FLATS | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| HARDNESS RATING | 41.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| CRITICALITY CODE JUSTIFICATION | FEAT |
| WASHER THICKNESS | 0.048 INCHES MINIMUM IN |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD SIZE | 0.500 INCHES IN |
No substitute or cross-reference records for this part.