8L4183-00: BOLT,EXTERNALLY RELIEVED BODY.
The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1141 OR STEEL COMP 1144 OVERALL, head_style: FLAT CHAMFER, head_height: 0.120 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.427 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN, thread_length: 1.500 INCHES MINIMUM IN. This part is cataloged in the U.S.
Government catalog under NSN 5306-00-006-4758, 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 1141 OR STEEL COMP 1144 OVERALL |
| head_style | FLAT CHAMFER |
| head_height | 0.120 INCHES NOMINAL IN |
| thread_class | 2A A |
| head_diameter | 0.427 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| thread_length | 1.500 INCHES MINIMUM IN |
| fastener_length | 3.719 INCHES NOMINAL IN |
| hardness_rating | 20.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| nominal_thread_diameter | 0.438 INCHES IN |
| first_diameter_from_head | 0.250 INCHES NOMINAL IN |
| thread_quantity_per_inch | 20 |
| NSN | 5306-00-006-4758 |
| HEAD HEIGHT | 0.120 INCHES NOMINAL IN |
| FASTENER LENGTH | 3.719 INCHES NOMINAL IN |
| THREAD LENGTH | 1.500 INCHES MINIMUM IN |
| HARDNESS RATING | 20.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| SHANK UNTHREADED HOLE DIAMETER | 0.124 INCHES NOMINAL FIRST HOLE IN |
| FIRST DIAMETER FROM HEAD | 0.250 INCHES NOMINAL IN |
| NOMINAL THREAD DIAMETER | 0.438 INCHES IN |
| HEAD STYLE | FLAT CHAMFER |
| THREAD DIRECTION | RIGHT-HAND |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.125 INCHES NOMINAL IN |