16990-8C-28: SCREW,MACHINE.
The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN, thread_length: 1.596 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN, screw_material: STEEL, fastener_length: 1.375 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5305-01-352-3205, 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 COUNTERSUNK |
| thread_class | 3A A |
| head_diameter | 0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| thread_length | 1.596 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| screw_material | STEEL |
| fastener_length | 1.375 INCHES NOMINAL IN |
| hardness_rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| thread_direction | RIGHT-HAND |
| countersink_angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| width_between_flats | 0.312 INCHES NOMINAL IN |
| nominal_thread_diameter | 0.500 INCHES IN |
| screw_surface_treatment | OXIDE |
| NSN | 5305-01-352-3205 |
| SCREW SURFACE TREATMENT | OXIDE |
| FASTENER LENGTH | 1.375 INCHES NOMINAL IN |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A535 ASSN STD SINGLE MATERIAL RESPONSE |
| THREAD LENGTH | 1.596 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| NOMINAL THREAD DIAMETER | 0.500 INCHES IN |
| HEAD STYLE | FLAT COUNTERSUNK |
| THREAD DIRECTION | RIGHT-HAND |
| WIDTH BETWEEN FLATS | 0.312 INCHES NOMINAL IN |
| SCREW MATERIAL | STEEL |
No substitute or cross-reference records for this part.