NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 8740 OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNF, overall_height: 0.646 INCHES MAXIMUM IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System under NSN 5310-00-806-2358, 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 COMP 8740 OVERALL |
| nut_style | DOUBLE HEXAGON |
| thread_class | 3B |
| thread_series | UNF |
| overall_height | 0.646 INCHES MAXIMUM IN |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.107 INCHES NOMINAL IN |
| surface_treatment | CADMIUM OVERALL |
| width_across_flats | 0.681 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| nominal_thread_size | 0.625 INCHES IN |
| washer_outside_diameter | 0.960 INCHES MINIMUM AND 0.970 INCHES MAXIMUM IN |
| NSN | 5310-00-806-2358 |
| NUT STYLE | DOUBLE HEXAGON |
| WASHER THICKNESS | 0.107 INCHES NOMINAL IN |
| THREAD SERIES | UNF |
| THREAD QUANTITY PER INCH | 18 |
| NOMINAL THREAD SIZE | 0.625 INCHES IN |
| WASHER OUTSIDE DIAMETER | 0.960 INCHES MINIMUM AND 0.970 INCHES MAXIMUM IN |
| THREAD CLASS | 3B |
| MATERIAL | STEEL COMP 8740 OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |