6565-21-121-4102: BOLT,MACHINE.
The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.250 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN, fastener_length: 4.000 INCHES NOMINAL IN, special_features: DRAWING CONTAINS FLIGHT SAFETY PARTS. This part is cataloged in the U.S.
Government catalog under NSN 5306-01-559-2491, 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.
| head_style | FLAT CHAMFER |
| head_height | 0.250 INCHES NOMINAL IN |
| thread_class | 3A A |
| head_diameter | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| fastener_length | 4.000 INCHES NOMINAL IN |
| special_features | DRAWING CONTAINS FLIGHT SAFETY PARTS |
| thread_direction | RIGHT-HAND |
| nominal_thread_diameter | 0.500 INCHES IN |
| thread_quantity_per_inch | 20 |
| thread_series_designator | UNF |
| part_name_assigned_by_controlling_agency | PIN TANDEM SERVO MAIN ROTOR |
| NSN | 5306-01-559-2491 |
| HEAD HEIGHT | 0.250 INCHES NOMINAL IN |
| FASTENER LENGTH | 4.000 INCHES NOMINAL IN |
| NOMINAL THREAD DIAMETER | 0.500 INCHES IN |
| HEAD STYLE | FLAT CHAMFER |
| THREAD DIRECTION | RIGHT-HAND |
| SPECIAL FEATURES | DRAWING CONTAINS FLIGHT SAFETY PARTS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | PIN TANDEM SERVO MAIN ROTOR |
| THREAD CLASS | 3A A |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |
No substitute or cross-reference records for this part.