The 81755 C4529 is a the manufacturer industrial component. Key specifications include color: BLACK, shank_style: CONCAVE, overall_depth: 0.375 INCHES NOMINAL IN, shank_diameter: 0.625 INCHES NOMINAL IN, inside_diameter: 0.164 INCHES NOMINAL IN, outside_diameter: 0.810 INCHES NOMINAL IN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5355-00-137-3509, 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.
| color | BLACK |
| shank_style | CONCAVE |
| overall_depth | 0.375 INCHES NOMINAL IN |
| shank_diameter | 0.625 INCHES NOMINAL IN |
| inside_diameter | 0.164 INCHES NOMINAL IN |
| outside_diameter | 0.810 INCHES NOMINAL IN |
| style_designator | ROUND |
| attachment_method | SCREW ON |
| overall_thickness | 0.810 INCHES NOMINAL IN |
| nominal_thread_size | 0.164 INCHES RECEPTACLE IN |
| thread_quantity_per_inch | 32 RECEPTACLE |
| thread_series_designator | UNIFIED NATIONAL COARSE (UNC) RECEPTACLE |
| NSN | 5355-00-137-3509 |
| GRIPPING SURFACE CONDITION | SMOOTH |
| INSIDE DIAMETER | 0.164 INCHES NOMINAL IN |
| OVERALL THICKNESS | 0.810 INCHES NOMINAL IN |
| ATTACHMENT METHOD | SCREW ON |
| COLOR | BLACK |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) RECEPTACLE |
| STYLE DESIGNATOR | ROUND |
| THREAD QUANTITY PER INCH | 32 RECEPTACLE |
| NOMINAL THREAD SIZE | 0.164 INCHES RECEPTACLE IN |
| SHANK DIAMETER | 0.625 INCHES NOMINAL IN |