HW51550-4: NUT,SELF-LOCKING,EXTENDED WASHER.
NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 NUT, nut_style: HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.280 INCHES NOMINAL IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.
Government catalog under NSN 5310-01-522-3353, 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 NUT |
| nut_style | HEXAGON |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.280 INCHES NOMINAL IN |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| special_features | UPPER THREADED PORTION FORMED OUT OF ROUND TO PROVIDE SELF LOCKING ACTION |
| thread_direction | RIGHT-HAND |
| surface_treatment | PASSIVATE NUT |
| width_across_flats | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| nominal_thread_size | 0.250 INCHES IN |
| end_item_identification | C-130J HERCULES AIRCRAFT |
| NSN | 5310-01-522-3353 |
| OVERALL HEIGHT | 0.280 INCHES NOMINAL IN |
| WASHER OUTSIDE DIAMETER | 0.460 INCHES MAXIMUM IN |
| WIDTH ACROSS FLATS | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5525 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5732 ASSN STD 1ST MATERIAL RESPONSE OR AMS5737 ASSN STD 2ND MATERIAL RESPONSE NUT |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD SIZE | 0.250 INCHES IN |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| SPECIAL FEATURES | UPPER THREADED PORTION FORMED OUT OF ROUND TO PROVIDE SELF LOCKING ACTION |
No substitute or cross-reference records for this part.