FN22M-720: NUT,SELF-LOCKING,EXTENDED WASHER.
NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 8740 OVERALL, nut_style: DOUBLE HEXAGON, nut_height: 0.430 INCHES NOMINAL IN, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B. This part is cataloged in the U.S.
Government catalog under NSN 5310-00-917-2650, 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 |
| nut_height | 0.430 INCHES NOMINAL IN |
| lubrication | DRY FILM LUBRICANT |
| temp_rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| overall_height | 0.430 INCHES MAXIMUM IN |
| hardness_rating | 40.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| locking_feature | PREVAILING TORQUE ALL METAL DESIGN |
| special_features | THREAD SIZE: 0.437-20 UNJF-3B,HARDNESS: 44HRC, MAXIMUM,FINISH: CADMIUM PLATE PER AMS-QQ-P-416 WITH SALT SPRAY REQUIREMENTS PER TYPE II,CLASS 2 |
| thread_direction | RIGHT-HAND |
| NSN | 5310-00-917-2650 |
| LUBRICATION | DRY FILM LUBRICANT |
| OVERALL HEIGHT | 0.430 INCHES MAXIMUM IN |
| WASHER OUTSIDE DIAMETER | 0.750 INCHES MAXIMUM IN |
| WIDTH ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |
| TEMP RATING | 450.0 FAHRENHEIT NOMINAL DEGF |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| WASHER THICKNESS | 0.080 INCHES MINIMUM IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS6485 ASSN STD 2ND MATERIAL RESPONSE OR AMS6487 ASSN STD 3RD MATERIAL RESPONSE OVERALL |