51B464-4A1H: BOLT,CLOSE TOLERANCE.
The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL, hole_type: DRILLED, head_style: HEXAGON, grip_length: 0.062 INCHES NOMINAL IN, head_height: 0.125 INCHES NOMINAL IN, thread_class: 3A A. This part is cataloged in the U.S.
Government catalog under NSN 5306-00-993-1543, 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 E4340 OR STEEL COMP 4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL |
| hole_type | DRILLED |
| head_style | HEXAGON |
| grip_length | 0.062 INCHES NOMINAL IN |
| head_height | 0.125 INCHES NOMINAL IN |
| thread_class | 3A A |
| grip_diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| hole_diameter | 0.046 INCHES NOMINAL IN |
| hole_quantity | 3 |
| thread_length | 0.316 INCHES MINIMUM IN |
| surface_finish | 63.0 MICROINCHES HEAD |
| fastener_length | 0.378 INCHES NOMINAL IN |
| NSN | 5306-00-993-1543 |
| SURFACE FINISH | 32.0 MICROINCHES THREADS |
| SURFACE FINISH | 32.0 MICROINCHES GRIP |
| SURFACE FINISH | 63.0 MICROINCHES HEAD |
| HEAD HEIGHT | 0.125 INCHES NOMINAL IN |
| FASTENER LENGTH | 0.378 INCHES NOMINAL IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD LENGTH | 0.316 INCHES MINIMUM IN |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| HOLE CONFIGURATION STYLE | HEXAGON LONGITUDINAL HOLE |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
No substitute or cross-reference records for this part.