158189: WASHER,FLAT.
The WASHER,FLAT is a Disguise industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: SQUARE, thickness: 0.031 INCHES NOMINAL IN, nut_height: 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN, thread_class: 3B, hole_diameter: 0.281 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5310-00-637-1414, 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 | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| nut_style | SQUARE |
| thickness | 0.031 INCHES NOMINAL IN |
| nut_height | 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| thread_class | 3B |
| hole_diameter | 0.281 INCHES NOMINAL IN |
| thread_series | UNIFIED NATIONAL COARSE (UNC) |
| locking_feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| overall_diameter | 0.430 INCHES NOMINAL IN |
| thread_direction | RIGHT-HAND |
| surface_treatment | CADMIUM OVERALL EXCEPT INSERT |
| width_across_flats | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| NSN | 5310-00-637-1414 |
| WIDTH ACROSS FLATS | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD 2ND MATERIAL RESPONSE NUT |
| THREAD DIRECTION | RIGHT-HAND |
| NOMINAL THREAD SIZE | 0.190 INCHES IN |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| NUT HEIGHT | 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| SURFACE TREATMENT | CADMIUM OVERALL EXCEPT INSERT |
| NUT STYLE | SQUARE |