ST3M559-4-8: SCREW,CLOSE TOLERANCE.
The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, grip_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, head_height: 0.106 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN. This part is cataloged in the U.S.
Government catalog under NSN 5305-01-322-1597, 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 | STEEL OVERALL |
| head_style | FLAT COUNTERSUNK UNDERCUT |
| grip_length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| head_height | 0.106 INCHES NOMINAL IN |
| thread_class | 3A A |
| grip_diameter | 0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN |
| head_diameter | 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| thread_length | 0.397 INCHES NOMINAL IN |
| fastener_length | 0.881 INCHES MINIMUM AND 0.928 INCHES MAXIMUM IN |
| thread_direction | RIGHT-HAND |
| countersink_angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| surface_treatment | CADMIUM OVERALL |
| NSN | 5305-01-322-1597 |
| HEAD HEIGHT | 0.106 INCHES NOMINAL IN |
| FASTENER LENGTH | 0.881 INCHES MINIMUM AND 0.928 INCHES MAXIMUM IN |
| THREAD LENGTH | 0.397 INCHES NOMINAL IN |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
| HEAD STYLE | FLAT COUNTERSUNK UNDERCUT |
| THREAD DIRECTION | RIGHT-HAND |
| SPECIFICATION/STANDARD DATA | 76301-ST3-559-4-8 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| GRIP LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| GRIP DIAMETER | 0.2641 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN |
| SURFACE TREATMENT | CADMIUM OVERALL |
No substitute or cross-reference records for this part.