3180983: NUT,PLAIN,EXTENDED WASHER,HEXAGO.
NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: NICKEL ALLOY K-500 OVERALL, thread_class: 3B, thread_series: UN, overall_height: 4.750 INCHES NOMINAL IN, hardness_rating: 24.0 ROCKWELL C MINIMUM, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.
Government catalog under NSN 5310-01-355-8601, 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 | NICKEL ALLOY K-500 OVERALL |
| thread_class | 3B |
| thread_series | UN |
| overall_height | 4.750 INCHES NOMINAL IN |
| hardness_rating | 24.0 ROCKWELL C MINIMUM |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.375 INCHES NOMINAL IN |
| width_across_flats | 5.750 INCHES NOMINAL IN |
| nominal_thread_size | 4.000 INCHES IN |
| bearing_surface_finish | 125.0 MICROINCHES |
| washer_outside_diameter | 7.930 INCHES MINIMUM AND 7.940 INCHES MAXIMUM IN |
| thread_quantity_per_inch | 12 |
| NSN | 5310-01-355-8601 |
| OVERALL HEIGHT | 4.750 INCHES NOMINAL IN |
| WASHER OUTSIDE DIAMETER | 7.930 INCHES MINIMUM AND 7.940 INCHES MAXIMUM IN |
| WIDTH ACROSS FLATS | 5.750 INCHES NOMINAL IN |
| BEARING SURFACE FINISH | 125.0 MICROINCHES |
| THREAD SERIES | UN |
| HARDNESS RATING | 24.0 ROCKWELL C MINIMUM |
| WASHER THICKNESS | 0.375 INCHES NOMINAL IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD SIZE | 4.000 INCHES IN |
No substitute or cross-reference records for this part.