3995841: BOLT,RIBBED SHOULDER.
The BOLT,RIBBED SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, rib_length: 0.240 INCHES NOMINAL IN, head_height: 0.260 INCHES NOMINAL IN, rib_quantity: 35, thread_class: 2A A. This part is cataloged in the U.S.
Government catalog under NSN 5306-01-150-1197, 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 OVERALL |
| head_style | FLAT CHAMFER |
| rib_length | 0.240 INCHES NOMINAL IN |
| head_height | 0.260 INCHES NOMINAL IN |
| rib_quantity | 35 |
| thread_class | 2A A |
| head_diameter | 0.780 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN |
| thread_length | 0.775 INCHES NOMINAL IN |
| fastener_length | 1.760 INCHES MINIMUM AND 1.790 INCHES MAXIMUM IN |
| hardness_rating | 77.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 80.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| features_provided | CASEHARDENED |
| NSN | 5306-01-150-1197 |
| HEAD HEIGHT | 0.260 INCHES NOMINAL IN |
| RIB INCLUDED ANGLE | 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 1.760 INCHES MINIMUM AND 1.790 INCHES MAXIMUM IN |
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.440 INCHES NOMINAL IN |
| THREAD LENGTH | 0.775 INCHES NOMINAL IN |
| HARDNESS RATING | 77.5 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 80.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| RIB LENGTH | 0.240 INCHES NOMINAL IN |
| RIB MINOR DIAMETER | 0.540 INCHES MINIMUM AND 0.543 INCHES MAXIMUM IN |
| NOMINAL THREAD DIAMETER | 0.437 INCHES IN |