HT181-4-20: SCREW,CLOSE TOLERANCE.
The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN, point_style: FLAT, point_length: 0.050 INCHES NOMINAL IN, thread_class: 3A A. This part is cataloged in the U.S.
Government catalog under NSN 5305-01-520-3102, 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 |
| grip_length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| point_style | FLAT |
| point_length | 0.050 INCHES NOMINAL IN |
| thread_class | 3A A |
| grip_diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| head_diameter | 0.464 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| thread_length | 0.469 INCHES NOMINAL IN |
| surface_finish | 32.0 MICROINCHES GRIP |
| fastener_length | 1.703 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| thread_direction | RIGHT-HAND |
| NSN | 5305-01-520-3102 |
| SURFACE FINISH | 32.0 MICROINCHES THREADS |
| SURFACE FINISH | 32.0 MICROINCHES GRIP |
| SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| POINT LENGTH | 0.050 INCHES NOMINAL IN |
| FASTENER LENGTH | 1.703 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THREAD LENGTH | 0.469 INCHES NOMINAL IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | NAS498 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES IN |
| HEAD STYLE | FLAT COUNTERSUNK |
No substitute or cross-reference records for this part.