28706L4C8: SETSCREW.
The SETSCREW is a the manufacturer industrial component. Key specifications include material: PLASTIC LOCKING FEATURE, head_style: HEADLESS (SETSCREW), point_style: HALF DOG, thread_class: 3A A, fastener_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER. This part is cataloged in the U.S.
Government catalog under NSN 5305-01-258-8490, 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 | PLASTIC LOCKING FEATURE |
| head_style | HEADLESS (SETSCREW) |
| point_style | HALF DOG |
| thread_class | 3A A |
| fastener_length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| hardness_rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER |
| locking_feature | PATCH THREADS |
| thread_direction | RIGHT-HAND |
| surface_treatment | OXIDE FASTENER |
| width_across_flats | 0.125 INCHES NOMINAL IN |
| internal_drive_style | HEXAGON |
| nominal_thread_diameter | 0.250 INCHES IN |
| NSN | 5305-01-258-8490 |
| WIDTH ACROSS FLATS | 0.125 INCHES NOMINAL IN |
| FASTENER LENGTH | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
| HEAD STYLE | HEADLESS (SETSCREW) |
| THREAD DIRECTION | RIGHT-HAND |
| POINT STYLE | HALF DOG |
| LOCKING FEATURE | PATCH THREADS |
| COLOR | BLACK FASTENER |
| SURFACE TREATMENT | OXIDE FASTENER |
No substitute or cross-reference records for this part.