91257A701: BOLT,MACHINE.
The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.125 INCHES NOMINAL IN, fastener_length: 2.0 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5306-01-643-5068, 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 |
| head_height | 0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| thread_class | 2A A |
| thread_length | 1.125 INCHES NOMINAL IN |
| fastener_length | 2.0 INCHES NOMINAL IN |
| thread_direction | RIGHT-HAND |
| surface_treatment | ZINC OVERALL |
| width_between_flats | 0.603 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| nominal_thread_diameter | 0.4375 INCHES IN |
| thread_quantity_per_inch | 20 |
| thread_series_designator | UNF |
| NSN | 5306-01-643-5068 |
| HEAD HEIGHT | 0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| FASTENER LENGTH | 2.0 INCHES NOMINAL IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TY II SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THREAD LENGTH | 1.125 INCHES NOMINAL IN |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.4375 INCHES IN |
| HEAD STYLE | HEXAGON |
| THREAD DIRECTION | RIGHT-HAND |
| WIDTH BETWEEN FLATS | 0.603 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| SURFACE TREATMENT | ZINC OVERALL |