NAS1581C6H20: SCREW,CLOSE TOLERANCE.
The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN, head_diameter: 0.515 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN. This part is cataloged in the U.S.
Government catalog under NSN 5307-01-348-8284, 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 | IRON ALLOY 660 OVERALL |
| head_style | FLAT COUNTERSUNK |
| grip_length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| thread_class | 3A A |
| grip_diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| head_diameter | 0.515 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN |
| thread_length | 0.594 INCHES NOMINAL IN |
| overall_length | 1.187 INCHES NOMINAL IN |
| surface_finish | 32.0 MICROINCHES THREADS |
| fastener_length | 1.829 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN |
| locking_feature | KEY INSERTS |
| style_designator | LOCKED IN |
| NSN | 5307-01-348-8284 |
| THREAD LENGTH | 0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM NUT THREAD IN |
| STYLE DESIGNATOR | LOCKED IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5734 ASSN STD SINGLE MATERIAL RESPONSE |
| OVERALL LENGTH | 1.187 INCHES NOMINAL IN |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| DISTANCE FROM END OF STUD END THREADS TO NUT END | 0.782 INCHES MINIMUM AND 0.842 INCHES MAXIMUM IN |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD IN |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD IN |
| LOCKING FEATURE | KEY INSERTS |