NAS1790V4-9: SCREW,CLOSE TOLERANCE.
The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R56400 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.5625 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN, head_diameter: 0.464 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN. This part is cataloged in the U.S.
Government catalog under NSN 5305-01-706-9361, 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 | TITANIUM ALLOY UNS R56400 OVERALL |
| head_style | FLAT COUNTERSUNK |
| grip_length | 0.5625 INCHES NOMINAL IN |
| thread_class | 3A A |
| grip_diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| head_diameter | 0.464 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN |
| thread_length | 0.425 INCHES NOMINAL IN |
| fastener_length | 0.9875 INCHES NOMINAL IN |
| thread_direction | RIGHT-HAND |
| countersink_angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| internal_drive_style | HIGH-TORQUE |
| end_item_identification | B-52 AIRCRAFT |
| NSN | 5305-01-706-9361 |
| FASTENER LENGTH | 0.9875 INCHES NOMINAL IN |
| THREAD LENGTH | 0.425 INCHES NOMINAL IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS4928 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OR AMS4967 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
| HEAD STYLE | FLAT COUNTERSUNK |
| THREAD DIRECTION | RIGHT-HAND |
| SPECIFICATION/STANDARD DATA | 80205-NAS1790 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| GRIP LENGTH | 0.5625 INCHES NOMINAL IN |
| GRIP DIAMETER | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH LBS |
No substitute or cross-reference records for this part.