NUT,SELF-LOCKING,CASTELLATED,HEX. Key specifications include material: STEEL OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.313 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-269-0328, 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 | CASTELLATED, HEXAGON |
| nut_height | 0.313 INCHES NOMINAL IN |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL COARSE (UNC) |
| locking_feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| special_features | REGULAR HEIGHT,MADE FROM NICKEL COPPER,WITH NON-METALLIC INSERT: MOD IS 450 DEGREE F POLYIMIDE PLASTIC INSERT |
| thread_direction | RIGHT-HAND |
| width_across_flats | 0.934 INCHES NOMINAL IN |
| nominal_thread_size | 0.625 INCHES IN |
| bearing_surface_type | FLAT |
| end_item_identification | LOCK ASSY, MU |
| NSN | 5310-01-269-0328 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| TEMP RATING | 450.0 FAHRENHEIT NOMINAL DEGF |
| DEPARTURE FROM CITED DOCUMENT | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| NUT HEIGHT | 0.732 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN |
| SPECIAL TEST FEATURES | AS DIFFERENTIATED BY TEMPERATURE RATING |
| NOMINAL THREAD SIZE | 0.625 INCHES IN |
| THREAD QUANTITY PER INCH | 11 |
| THREAD CLASS | 3B |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| NUT STYLE | HEXAGON |