255AS138-1: BOLT,SHOULDER.
The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, head_style: HEXAGON, head_height: 0.062 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.211 INCHES MINIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.
Government catalog under NSN 5306-00-343-0885, 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 4130 OVERALL |
| head_style | HEXAGON |
| head_height | 0.062 INCHES NOMINAL IN |
| thread_class | 2A A |
| thread_length | 0.211 INCHES MINIMUM IN |
| shoulder_shape | ROUND FIRST SHOULDER |
| fastener_length | 0.563 INCHES NOMINAL IN |
| hardness_rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| shoulder_length | 0.312 INCHES NOMINAL FIRST SHOULDER IN |
| thread_direction | RIGHT-HAND |
| shoulder_diameter | 0.313 INCHES NOMINAL FIRST SHOULDER IN |
| surface_treatment | CADMIUM AND CHROMATE OVERALL |
| NSN | 5306-00-343-0885 |
| HEAD HEIGHT | 0.062 INCHES NOMINAL IN |
| FASTENER LENGTH | 0.563 INCHES NOMINAL IN |
| SHOULDER LENGTH | 0.312 INCHES NOMINAL FIRST SHOULDER IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SHOULDER DIAMETER | 0.313 INCHES NOMINAL FIRST SHOULDER IN |
| THREAD LENGTH | 0.211 INCHES MINIMUM IN |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
No substitute or cross-reference records for this part.