21U040: NUT,SELF-LOCKING,HEXAGON.
The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1212 NUT, nut_style: HEXAGON, nut_height: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.
Government catalog under NSN 5310-00-660-1938, 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 1212 NUT |
| nut_style | HEXAGON |
| nut_height | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| temp_rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| thread_class | 3B |
| thread_series | UNIFIED NATIONAL COARSE (UNC) |
| locking_feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| thread_direction | RIGHT-HAND |
| surface_treatment | ZINC OVERALL EXCEPT INSERT |
| width_across_flats | 0.489 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN |
| nominal_thread_size | 0.250 INCHES IN |
| bearing_surface_type | CHAMFERED |
| NSN | 5310-00-660-1938 |
| WIDTH ACROSS FLATS | 0.489 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL DEGF |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 COMP A TYPE1 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-M-20693 COMP B TYPE4 AND 4A MIL SPEC 2ND MATERIAL RESPONSE LOCKING INSERT A |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5010 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD SIZE | 0.250 INCHES IN |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| NUT HEIGHT | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |