MB300-1225: SCREW,SHOULDER.
The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.125 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.553 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN, thread_length: 0.440 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.
Government catalog under NSN 5305-00-332-3909, 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 | 0.125 INCHES NOMINAL IN |
| thread_class | 2A A |
| head_diameter | 0.553 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN |
| thread_length | 0.440 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN |
| shoulder_shape | ROUND FIRST SHOULDER |
| fastener_length | 1.100 INCHES NOMINAL IN |
| shoulder_length | 0.507 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN |
| width_across_flats | 0.320 INCHES NOMINAL IN |
| internal_drive_style | HEXAGON |
| nominal_thread_diameter | 0.250 INCHES IN |
| thread_quantity_per_inch | 28 |
| NSN | 5305-00-332-3909 |
| WIDTH ACROSS FLATS | 0.320 INCHES NOMINAL IN |
| HEAD HEIGHT | 0.125 INCHES NOMINAL IN |
| FASTENER LENGTH | 1.100 INCHES NOMINAL IN |
| SHOULDER LENGTH | 0.507 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN |
| THREAD LENGTH | 0.440 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
No substitute or cross-reference records for this part.