The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, thread_length: 0.303 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, fastener_length: 1.500 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 5305-01-147-6719, 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 | 0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN |
| thread_class | 3A A |
| head_diameter | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| thread_length | 0.303 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| fastener_length | 1.500 INCHES NOMINAL IN |
| special_features | STRAIGHT KNURL ON SIDE OF HEAD |
| thread_direction | RIGHT-HAND |
| internal_drive_style | SLOT |
| nominal_thread_diameter | 0.250 INCHES IN |
| first_diameter_from_head | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| thread_quantity_per_inch | 20 |
| NSN | 5305-01-147-6719 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| INTERNAL DRIVE STYLE | SLOT |
| HEAD HEIGHT | 0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN |
| THREAD QUANTITY PER INCH | 20 |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| THREAD CLASS | 3A A |
| FASTENER LENGTH | 1.500 INCHES NOMINAL IN |
| THREAD LENGTH | 0.303 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| HEAD DIAMETER | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| FIRST DIAMETER FROM HEAD | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |