366 990 03 01: BOLT,EXTERNALLY RELIEVED BODY.
The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 12.9 OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 12.0 MILLIMETERS NOMINAL MM, point_style: FLAT, thread_length: 60.0 MILLIMETERS MINIMUM AND 80.0 MILLIMETERS MAXIMUM MM, fastener_length: 110.50 MILLIMETERS MINIMUM AND 111.50 MILLIMETERS MAXIMUM MM. This part is cataloged in the U.S.
Government catalog under NSN 5306-01-238-3188, 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 PROPERTY CLASS 12.9 OVERALL |
| head_style | HEXAGON EXTENDED WASHER |
| head_height | 12.0 MILLIMETERS NOMINAL MM |
| point_style | FLAT |
| thread_length | 60.0 MILLIMETERS MINIMUM AND 80.0 MILLIMETERS MAXIMUM MM |
| fastener_length | 110.50 MILLIMETERS MINIMUM AND 111.50 MILLIMETERS MAXIMUM MM |
| thread_direction | RIGHT-HAND |
| width_between_flats | 22.0 MILLIMETERS MINIMUM AND 22.4 MILLIMETERS MAXIMUM MM |
| nominal_thread_diameter | 12.0 MILLIMETERS MM |
| extended_washer_diameter | 22.5 MILLIMETERS MINIMUM AND 23.5 MILLIMETERS MAXIMUM MM |
| first_diameter_from_head | 10.8 MILLIMETERS MINIMUM AND 10.9 MILLIMETERS MAXIMUM MM |
| third_diameter_from_head | 10.8 MILLIMETERS MINIMUM AND 10.9 MILLIMETERS MAXIMUM MM |
| NSN | 5306-01-238-3188 |
| EXTENDED WASHER THICKNESS | 2.8 MILLIMETERS MINIMUM AND 3.2 MILLIMETERS MAXIMUM MM |
| HEAD HEIGHT | 12.0 MILLIMETERS NOMINAL MM |
| EXTERNAL THREAD TOLERANCE CLASS | 6G G |
| FASTENER LENGTH | 110.50 MILLIMETERS MINIMUM AND 111.50 MILLIMETERS MAXIMUM MM |
| EXTENDED WASHER DIAMETER | 22.5 MILLIMETERS MINIMUM AND 23.5 MILLIMETERS MAXIMUM MM |
| THREAD PITCH IN MILLIMETERS | 1.75 |
| THREAD LENGTH | 60.0 MILLIMETERS MINIMUM AND 80.0 MILLIMETERS MAXIMUM MM |
| FIRST DIAMETER FROM HEAD | 10.8 MILLIMETERS MINIMUM AND 10.9 MILLIMETERS MAXIMUM MM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 14.85 MILLIMETERS MINIMUM AND 15.15 MILLIMETERS MAXIMUM MM |
| NOMINAL THREAD DIAMETER | 12.0 MILLIMETERS MM |