The BOLT,RIBBED SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL, head_style: FLAT CHAMFER, rib_length: 0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN, head_height: 0.312 INCHES NOMINAL IN, rib_quantity: 31, thread_class: 3A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-733-9239, 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 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL |
| head_style | FLAT CHAMFER |
| rib_length | 0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN |
| head_height | 0.312 INCHES NOMINAL IN |
| rib_quantity | 31 |
| thread_class | 3A A |
| head_diameter | 1.310 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN |
| thread_length | 1.156 INCHES MINIMUM IN |
| shoulder_shape | ROUND FIRST SHOULDER |
| fastener_length | 2.469 INCHES NOMINAL IN |
| hardness_rating | 300.0 BRINELL STANDARD MINIMUM AND 350.0 BRINELL STANDARD MAXIMUM OVERALL |
| shoulder_length | 0.906 INCHES NOMINAL FIRST SHOULDER IN |
| NSN | 5306-00-733-9239 |
| THREAD LENGTH | 1.156 INCHES MINIMUM IN |
| HEAD STYLE | FLAT CHAMFER |
| HEAD HEIGHT | 0.312 INCHES NOMINAL IN |
| HEAD DIAMETER | 1.310 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN |
| HARDNESS RATING | 300.0 BRINELL STANDARD MINIMUM AND 350.0 BRINELL STANDARD MAXIMUM OVERALL |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 16 |
| SHOULDER DIAMETER | 0.840 INCHES NOMINAL FIRST SHOULDER IN |
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.125 INCHES NOMINAL IN |
| FEATURES PROVIDED | CASEHARDENED |