A51B21643-21: BOLT,INTERNALLY RELIEVED BODY.
The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.190 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 1.500 INCHES NOMINAL IN, thread_length: 0.890 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5306-00-003-6569, 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 OVERALL |
| head_style | FLAT CHAMFER |
| head_height | 0.190 INCHES NOMINAL IN |
| thread_class | 3A A |
| head_diameter | 1.500 INCHES NOMINAL IN |
| thread_length | 0.890 INCHES NOMINAL IN |
| style_designator | COUNTERBORE UNTHREADED |
| thread_direction | RIGHT-HAND |
| counterbore_depth | 0.490 INCHES NOMINAL IN |
| surface_treatment | CHROMIUM GRIP |
| counterbore_diameter | 0.700 INCHES NOMINAL IN |
| nominal_thread_diameter | 0.750 INCHES IN |
| NSN | 5306-00-003-6569 |
| HEAD HEIGHT | 0.190 INCHES NOMINAL IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE GRIP |
| THREAD LENGTH | 0.890 INCHES NOMINAL IN |
| STYLE DESIGNATOR | COUNTERBORE UNTHREADED |
| MATERIAL DOCUMENT AND CLASSIFICATION | G-1013 FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.750 INCHES IN |
| COUNTERBORE DEPTH | 0.490 INCHES NOMINAL IN |
| HEAD STYLE | FLAT CHAMFER |
| THREAD DIRECTION | RIGHT-HAND |
| COUNTERBORE DIAMETER | 0.700 INCHES NOMINAL IN |
No substitute or cross-reference records for this part.