NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: CASTELLATED HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, hardness_rating: 29.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-296-0633, 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 | IRON ALLOY 660 OVERALL |
| nut_style | CASTELLATED HEXAGON |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| hardness_rating | 29.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| thread_direction | RIGHT-HAND |
| washer_thickness | 0.020 INCHES NOMINAL IN |
| width_across_flats | 0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN |
| nominal_thread_size | 0.190 INCHES IN |
| washer_outside_diameter | 0.325 INCHES MAXIMUM IN |
| thread_quantity_per_inch | 32 |
| NSN | 5310-01-296-0633 |
| WIDTH ACROSS FLATS | 0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN |
| OVERALL HEIGHT | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| THREAD QUANTITY PER INCH | 32 |
| MATERIAL | IRON ALLOY 660 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| WASHER THICKNESS | 0.020 INCHES NOMINAL IN |
| NUT STYLE | CASTELLATED HEXAGON |
| THREAD CLASS | 3B |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| THREAD DIRECTION | RIGHT-HAND |