2689475: BOLT,INTERNALLY RELIEVED BODY.
The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, head_style: HEXAGON, head_height: 0.187 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.375 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL COARSE (UNC) COUNTERBORE. This part is cataloged in the U.S.
Government catalog under NSN 5306-01-169-6763, 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 4140 OVERALL |
| head_style | HEXAGON |
| head_height | 0.187 INCHES NOMINAL IN |
| thread_class | 2A A |
| thread_length | 0.375 INCHES NOMINAL IN |
| thread_series | UNIFIED NATIONAL COARSE (UNC) COUNTERBORE |
| fastener_length | 1.313 INCHES NOMINAL IN |
| hardness_rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| shoulder_length | 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| style_designator | COUNTERBORE THREADED |
| thread_direction | RIGHT-HAND |
| threads_per_inch | 32 COUNTERBORE |
| NSN | 5306-01-169-6763 |
| HEAD HEIGHT | 0.187 INCHES NOMINAL IN |
| FASTENER LENGTH | 1.313 INCHES NOMINAL IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232 TY M CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| INTERNAL THREAD LENGTH | 0.250 INCHES NOMINAL COUNTERBORE IN |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) COUNTERBORE |
| CONCENTRIC HOLE DEPTH | 0.437 INCHES MINIMUM AND 0.467 INCHES MAXIMUM IN |
| INTERNAL THREAD DIRECTION | RIGHT-HAND COUNTERBORE |
| THREAD LENGTH | 0.375 INCHES NOMINAL IN |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| THREADS PER INCH | 32 COUNTERBORE |
No substitute or cross-reference records for this part.