6565-21-121-4101: BOLT,SHOULDER.
The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP E9310 OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.375 INCHES NOMINAL IN, thread_class: 3A A, shoulder_shape: ROUND FIRST SHOULDER, fastener_length: 4.125 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5306-00-522-3854, 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 E9310 OVERALL |
| head_style | HEXAGON EXTENDED WASHER |
| head_height | 0.375 INCHES NOMINAL IN |
| thread_class | 3A A |
| shoulder_shape | ROUND FIRST SHOULDER |
| fastener_length | 4.125 INCHES NOMINAL IN |
| shoulder_length | 3.535 INCHES NOMINAL FIRST SHOULDER IN |
| special_features | SHOULDER AND THREADS UNDERCUT FOR RELIEF. CARBURIZE AND PARCO LUBRIZE SHOULDER AND SHOULDER UNDERCUT |
| thread_direction | RIGHT-HAND |
| features_provided | CASEHARDENED |
| shoulder_diameter | 0.9991 INCHES MINIMUM AND 0.9994 INCHES MAXIMUM FIRST SHOULDER IN |
| surface_treatment | CADMIUM THREADS |
| NSN | 5306-00-522-3854 |
| EXTENDED WASHER THICKNESS | 0.125 INCHES NOMINAL IN |
| HEAD HEIGHT | 0.375 INCHES NOMINAL IN |
| FASTENER LENGTH | 4.125 INCHES NOMINAL IN |
| SHOULDER LENGTH | 3.535 INCHES NOMINAL FIRST SHOULDER IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | A000 FED STD 3RD TREATMENT RESPONSE THREADS |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER |
| EXTENDED WASHER DIAMETER | 1.150 INCHES NOMINAL IN |
| SHOULDER DIAMETER | 0.9991 INCHES MINIMUM AND 0.9994 INCHES MAXIMUM FIRST SHOULDER IN |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE IN |
No substitute or cross-reference records for this part.