The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, grip_length: 0.938 INCHES NOMINAL IN, head_height: 0.203 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES GRIP. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-144-3983, 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 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4140 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| head_style | HEXAGON |
| grip_length | 0.938 INCHES NOMINAL IN |
| head_height | 0.203 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| thread_class | 3A A |
| grip_diameter | 0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM IN |
| surface_finish | 63.0 MICROINCHES GRIP |
| fastener_length | 1.578 INCHES NOMINAL IN |
| hardness_rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| surface_treatment | CADMIUM AND CHROMATE OVERALL |
| width_between_flats | 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN |
| NSN | 5306-00-144-3983 |
| SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE IN |
| FASTENER LENGTH | 1.578 INCHES NOMINAL IN |
| HEAD HEIGHT | 0.203 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| THREAD QUANTITY PER INCH | 24 |
| SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| THREAD SERIES DESIGNATOR | UNF |
| MATERIAL | STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4140 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| HEAD STYLE | HEXAGON |
| GRIP DIAMETER | 0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM IN |
| SURFACE FINISH | 63.0 MICROINCHES GRIP |