91251A558: SCREW,CAP,SOCKET HEAD.
The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_length: 1.000 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5305-01-359-8895, 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 |
| head_height | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| thread_class | 3A A |
| head_diameter | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| thread_length | 1.000 INCHES NOMINAL IN |
| fastener_length | 4.000 INCHES NOMINAL IN |
| hardness_rating | 37.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM THREADS |
| thread_direction | RIGHT-HAND |
| surface_treatment | OXIDE OVERALL |
| width_across_flats | 0.188 INCHES NOMINAL IN |
| internal_drive_style | HEXAGON |
| NSN | 5305-01-359-8895 |
| WIDTH ACROSS FLATS | 0.188 INCHES NOMINAL IN |
| HEAD HEIGHT | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| FASTENER LENGTH | 4.000 INCHES NOMINAL IN |
| THREAD LENGTH | 1.000 INCHES NOMINAL IN |
| HARDNESS RATING | 37.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM THREADS |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR 8 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
| HEAD STYLE | FLAT CHAMFER |
| THREAD DIRECTION | RIGHT-HAND |
| COLOR | BLACK OVERALL |
No substitute or cross-reference records for this part.