The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, grip_length: 3.250 INCHES NOMINAL IN, head_height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN, grip_diameter: 0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, thread_length: 1.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-557-0509, 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 | HEXAGON |
| grip_length | 3.250 INCHES NOMINAL IN |
| head_height | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |
| grip_diameter | 0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| thread_length | 1.250 INCHES NOMINAL IN |
| fastener_length | 4.400 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN |
| special_features | 1/2"-20 X 4-1/2" GRADE 5 ZINC PLATED HEX CAP SCREW |
| thread_direction | RIGHT-HAND |
| surface_treatment | ZINC OVERALL |
| width_between_flats | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| end_item_identification | MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS |
| NSN | 5306-01-557-0509 |
| THREAD QUANTITY PER INCH | 20 |
| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 4.400 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN |
| GRIP DIAMETER | 0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| THREAD LENGTH | 1.250 INCHES NOMINAL IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SAE J429, GR5 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| SPECIAL FEATURES | 1/2"-20 X 4-1/2" GRADE 5 ZINC PLATED HEX CAP SCREW |
| END ITEM IDENTIFICATION | MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS |
| HEAD HEIGHT | 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |