742578-1: BOLT,EXTERNALLY RELIEVED BODY.
The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410 OVERALL, head_style: HEXAGON, head_height: 0.140 INCHES NOMINAL IN, thread_class: 3A A, hole_diameter: 0.031 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN, thread_length: 0.295 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5306-01-215-5186, 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 410 OVERALL |
| head_style | HEXAGON |
| head_height | 0.140 INCHES NOMINAL IN |
| thread_class | 3A A |
| hole_diameter | 0.031 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| thread_length | 0.295 INCHES NOMINAL IN |
| fastener_length | 0.500 INCHES NOMINAL IN |
| hardness_rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| width_between_flats | 0.364 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| nominal_thread_diameter | 0.190 INCHES IN |
| first_diameter_from_head | 0.142 INCHES NOMINAL IN |
| NSN | 5306-01-215-5186 |
| HEAD HEIGHT | 0.140 INCHES NOMINAL IN |
| FASTENER LENGTH | 0.500 INCHES NOMINAL IN |
| THREAD LENGTH | 0.295 INCHES NOMINAL IN |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HOLE CONFIGURATION STYLE | HEXAGON FLATS |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| FIRST DIAMETER FROM HEAD | 0.142 INCHES NOMINAL IN |
| NOMINAL THREAD DIAMETER | 0.190 INCHES IN |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
No substitute or cross-reference records for this part.