The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 3A A, thread_length: 0.250 INCHES MAXIMUM IN, fastener_length: 0.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-249-0534, 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 | HEADLESS (SETSCREW) |
| point_style | CUP |
| thread_class | 3A A |
| thread_length | 0.250 INCHES MAXIMUM IN |
| fastener_length | 0.250 INCHES NOMINAL IN |
| hardness_rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| surface_treatment | CADMIUM AND CHROMATE OR ZINC OR CHROMATE OVERALL |
| width_across_flats | 0.063 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN |
| internal_drive_style | SQUARE |
| nominal_thread_diameter | 0.138 INCHES IN |
| NSN | 5305-00-249-0534 |
| MATERIAL | STEEL OVERALL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OR ZINC OR CHROMATE OVERALL |
| THREAD LENGTH | 0.250 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325,TYPE 3,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| FASTENER LENGTH | 0.250 INCHES NOMINAL IN |
| HEAD STYLE | HEADLESS (SETSCREW) |
| THREAD QUANTITY PER INCH | 32 |
| NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND 4 STYLE |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |