63978PC4: SCREW,MACHINE.
The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, thread_length: 0.500 INCHES MINIMUM IN, screw_material: STEEL COMP 1117 OR STEEL COMP 1118. This part is cataloged in the U.S.
Government catalog under NSN 5305-00-174-3908, 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.
| head_style | FLAT CHAMFER |
| head_height | 0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| thread_class | 2A A |
| head_diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| thread_length | 0.500 INCHES MINIMUM IN |
| screw_material | STEEL COMP 1117 OR STEEL COMP 1118 |
| fastener_length | 0.700 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN |
| thread_direction | RIGHT-HAND |
| internal_drive_style | SLOT |
| nominal_thread_diameter | 0.250 INCHES IN |
| thread_quantity_per_inch | 28 |
| thread_series_designator | UNF |
| NSN | 5305-00-174-3908 |
| HEAD HEIGHT | 0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| FASTENER LENGTH | 0.700 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-16124 CL 1 COMP A OR B MIL SPEC SINGLE MATERIAL RESPONSE |
| THREAD LENGTH | 0.500 INCHES MINIMUM IN |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
| HEAD STYLE | FLAT CHAMFER |
| THREAD DIRECTION | RIGHT-HAND |
| SCREW MATERIAL | STEEL COMP 1117 OR STEEL COMP 1118 |
| INTERNAL DRIVE STYLE | SLOT |
| THREAD CLASS | 2A A |
No substitute or cross-reference records for this part.