The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BUTTON, neck_width: 0.245 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, head_height: 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN, neck_length: 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN, thread_class: 2A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-889-2943, 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 | BUTTON |
| neck_width | 0.245 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| head_height | 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| neck_length | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| thread_class | 2A A |
| head_diameter | 0.563 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN |
| thread_length | 0.750 INCHES MINIMUM IN |
| fastener_length | 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN |
| hardness_rating | 95.0 ROCKWELL B MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| surface_treatment | ZINC OVERALL |
| NSN | 5306-00-889-2943 |
| THREAD CLASS | 2A A |
| HEAD STYLE | BUTTON |
| NECK LENGTH | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| FASTENER LENGTH | 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH LBS |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| HEAD DIAMETER | 0.563 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN |
| NOMINAL THREAD DIAMETER | 0.250 INCHES IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |