NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8640 OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UNF, overall_height: 1.160 INCHES MINIMUM AND 1.200 INCHES MAXIMUM IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 34.0 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 5310-01-341-4122, 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 4130 OR STEEL COMP 4140 OR STEEL COMP 8640 OVERALL |
| nut_style | HEXAGON |
| thread_class | 2B |
| thread_series | UNF |
| overall_height | 1.160 INCHES MINIMUM AND 1.200 INCHES MAXIMUM IN |
| hardness_rating | 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.047 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| surface_treatment | ZINC OVERALL |
| width_across_flats | 0.922 INCHES MINIMUM AND 0.939 INCHES MAXIMUM IN |
| nominal_thread_size | 0.625 INCHES IN |
| washer_outside_diameter | 1.230 INCHES MINIMUM IN |
| NSN | 5310-01-341-4122 |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | HEXAGON |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| NOMINAL THREAD SIZE | 0.625 INCHES IN |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNF |
| SURFACE TREATMENT | ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633,TY 2,CL FE/ZN8 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8640 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 1ST MATERIAL RESPONSE OVERALL |