NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL COMP 1030 OR STEEL COMP 8740 OVERALL, nut_style: HEXAGON, thread_class: 3B, thread_series: UNF, overall_height: 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN, hardness_rating: 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-208-5879, 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 1030 OR STEEL COMP 8740 OVERALL |
| nut_style | HEXAGON |
| thread_class | 3B |
| thread_series | UNF |
| overall_height | 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| hardness_rating | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| countersink_angle | 90.0 DEGREES NOMINAL NUT |
| surface_treatment | CADMIUM OVERALL |
| width_across_flats | 0.560 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN |
| nominal_thread_size | 0.438 INCHES IN |
| NSN | 5310-00-208-5879 |
| WASHER OUTSIDE DIAMETER | 0.680 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD 1ST MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| THREAD CLASS | 3B |
| THREAD SERIES | UNF |
| NOMINAL THREAD SIZE | 0.438 INCHES IN |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| OVERALL HEIGHT | 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| WASHER THICKNESS | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| MATERIAL | STEEL COMP 1030 OR STEEL COMP 8740 OVERALL |