128439: 128439.
The 128439 is a the manufacturer industrial component. Key specifications include material: UNABLE TO DECODE, head_style: OVAL, neck_width: 0.307 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN, head_height: 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN, neck_length: 0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN, thread_class: 2A A. This part is cataloged in the U.S.
Government catalog under NSN 5306-00-012-8439, 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 | UNABLE TO DECODE |
| head_style | OVAL |
| neck_width | 0.307 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN |
| head_height | 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| neck_length | 0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| thread_class | 2A A |
| head_diameter | 1.000 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN |
| hole_diameter | 0.172 INCHES NOMINAL IN |
| overall_width | 1.094 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN |
| thread_length | 0.875 INCHES MINIMUM IN |
| overall_length | 1.094 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN |
| fastener_length | 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN |
| NSN | 5306-00-012-8439 |
| NECK LENGTH | 0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| HEAD HEIGHT | 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| FASTENER LENGTH | 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN |
| THREAD LENGTH | 0.875 INCHES MINIMUM IN |
| HARDNESS RATING | 79.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL B MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES IN |
| HEAD STYLE | OVAL |
| THREAD DIRECTION | RIGHT-HAND |
| NECK WIDTH | 0.307 INCHES MINIMUM AND 0.324 INCHES MAXIMUM IN |
No substitute or cross-reference records for this part.