421404: SCREW,MACHINE.
The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN, thread_length: 0.262 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, screw_material: COPPER ALLOY, fastener_length: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN. This part is cataloged in the U.S.
Government catalog under NSN 5305-00-042-1404, 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 COUNTERSUNK |
| thread_class | 2A A |
| head_diameter | 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN |
| thread_length | 0.262 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| screw_material | COPPER ALLOY |
| fastener_length | 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| thread_direction | RIGHT-HAND |
| countersink_angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| internal_drive_style | CROSS RECESS TYPE 1 |
| nominal_thread_diameter | 0.138 INCHES IN |
| thread_quantity_per_inch | 40 |
| thread_series_designator | UNF |
| NSN | 5305-00-042-1404 |
| FASTENER LENGTH | 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| THREAD LENGTH | 0.262 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| NOMINAL THREAD DIAMETER | 0.138 INCHES IN |
| HEAD STYLE | FLAT COUNTERSUNK |
| THREAD DIRECTION | RIGHT-HAND |
| SCREW MATERIAL | COPPER ALLOY |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| THREAD CLASS | 2A A |
| THREAD QUANTITY PER INCH | 40 |