The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 3A A, thread_length: 0.312 INCHES MAXIMUM IN, fastener_length: 0.312 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System under NSN 5305-00-071-3580, 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 COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
| head_style | HEADLESS (SETSCREW) |
| point_style | CUP |
| thread_class | 3A A |
| thread_length | 0.312 INCHES MAXIMUM IN |
| fastener_length | 0.312 INCHES NOMINAL IN |
| hardness_rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| width_across_flats | 0.125 INCHES NOMINAL IN |
| internal_drive_style | HEXAGON |
| nominal_thread_diameter | 0.250 INCHES IN |
| thread_quantity_per_inch | 20 |
| NSN | 5305-00-071-3580 |
| THREAD QUANTITY PER INCH | 20 |
| THREAD LENGTH | 0.312 INCHES MAXIMUM IN |
| POINT STYLE | CUP |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 4 STYLE |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD CLASS | 3A A |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| FASTENER LENGTH | 0.312 INCHES NOMINAL IN |
| THREAD DIRECTION | RIGHT-HAND |
| INTERNAL DRIVE STYLE | HEXAGON |