The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BUTTON, neck_width: 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN, head_height: 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN, neck_length: 0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN, thread_class: 2A A. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-208-2091, 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 | 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN |
| head_height | 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN |
| neck_length | 0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| thread_class | 2A A |
| head_diameter | 0.782 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN |
| thread_length | 0.750 INCHES MINIMUM IN |
| fastener_length | 2.969 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN |
| hardness_rating | 95.0 ROCKWELL B MAXIMUM OVERALL |
| thread_direction | RIGHT-HAND |
| features_provided | SQUARE NUT |
| NSN | 5306-00-208-2091 |
| THREAD CLASS | 2A A |
| THREAD LENGTH | 0.750 INCHES MINIMUM IN |
| THREAD QUANTITY PER INCH | 20 |
| NECK LENGTH | 0.219 INCHES NOMINAL IN |
| MATERIAL | STEEL OVERALL |
| NONDEFINITIVE SPEC/STD DATA | C2 TYPE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | FF-B-571 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| HEAD STYLE | BUTTON |