NUT,PLAIN,SINGLE BALL SEAT,HEXAG. Key specifications include material: STEEL OVERALL, nut_style: SINGLE BALL SEAT, HEXAGON, nut_height: 1.375 INCHES NOMINAL IN, thread_class: 2B, thread_series: UN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-550-1284, 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 | SINGLE BALL SEAT, HEXAGON |
| nut_height | 1.375 INCHES NOMINAL IN |
| thread_class | 2B |
| thread_series | UN |
| hardness_rating | 35.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| ball_seat_radius | 1.183 INCHES MINIMUM AND 1.193 INCHES MAXIMUM IN |
| thread_direction | RIGHT-HAND |
| surface_treatment | CADMIUM OR ZINC OVERALL |
| width_across_flats | 1.750 INCHES NOMINAL IN |
| nominal_thread_size | 1.188 INCHES IN |
| thread_quantity_per_inch | 12 |
| NSN | 5310-00-550-1284 |
| NUT HEIGHT | 1.375 INCHES NOMINAL IN |
| BALL SEAT RADIUS | 1.183 INCHES MINIMUM AND 1.193 INCHES MAXIMUM IN |
| THREAD SERIES | UN |
| NOMINAL THREAD SIZE | 1.188 INCHES IN |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| THREAD QUANTITY PER INCH | 12 |
| THREAD CLASS | 2B |
| MATERIAL | STEEL OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | SINGLE BALL SEAT, HEXAGON |