The 91A4MA is a the manufacturer industrial component. Key specifications include color: BLACK, LUSTERLESS, overall_depth: 0.520 INCHES MINIMUM IN, inside_diameter: 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN, outside_diameter: 0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN, screw_drive_type: HEXAGON SOCKET, style_designator: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5355-00-619-4668, 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, LUSTERLESS |
| overall_depth | 0.520 INCHES MINIMUM IN |
| inside_diameter | 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| outside_diameter | 0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| screw_drive_type | HEXAGON SOCKET |
| style_designator | ROUND |
| attachment_method | SETSCREWS |
| counterbore_depth | 0.114 INCHES MINIMUM IN |
| overall_thickness | 0.760 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| nominal_thread_size | 0.164 INCHES SCREW HOLE IN |
| counterbore_diameter | 0.640 INCHES MINIMUM IN |
| material_transparency | OPAQUE |
| NSN | 5355-00-619-4668 |
| INSIDE DIAMETER | 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| SHAFT ACCOMMODATION STYLE | COUNTERBORED |
| MATERIAL TRANSPARENCY | OPAQUE |
| COUNTERBORE DIAMETER | 0.640 INCHES MINIMUM IN |
| COUNTERBORE DEPTH | 0.114 INCHES MINIMUM IN |
| SPECIFICATION/STANDARD DATA | 96906-MS91528 GOVERNMENT STANDARD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| COLOR | BLACK, LUSTERLESS |
| THREAD QUANTITY PER INCH | 32 SCREW HOLE |
| NOMINAL THREAD SIZE | 0.164 INCHES SCREW HOLE IN |