S-91236A928 1"-8 x 6" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 60,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
• Zinc plating provides excellent corrosion resistance, extending the service life of the screw in various industrial environments.
• Coarse UNC threads and Class 2A fit allow for faster assembly and easier alignment, saving time during installation.
• External hex drive and hex head design offer high torque capability and secure tool engagement, preventing stripping and ensuring tight fastening.
• Partially threaded shank concentrates threads where needed, improving grip and resistance to vibration loosening.
• Rockwell B69 hardness enhances durability and wear resistance, maintaining integrity under repeated stress.
• Compliance with ASME B18.2.1 and ASTM A307 standards guarantees consistent quality and interoperability, meeting rigorous industry requirements.

Professional Applications & Engineering Value

This 1"-8 UNC hex head screw is engineered to address common industrial challenges, such as structural instability and corrosion in harsh conditions. Made from steel with a zinc-plated finish, it resists rust and degradation, making it ideal for outdoor machinery, construction frameworks, and heavy equipment assembly. The coarse thread design ensures quick, secure fastening in materials like wood and metal, reducing installation time and minimizing thread damage. Its partial threading and external hex drive provide precise clamping force and easy access in tight spaces, enhancing reliability in industrial applications where vibration and load stresses are prevalent. By meeting ASME B18.2.1 and material standards, it delivers consistent performance, supporting efficient maintenance and long-term project durability.

Specification Summary & Compliance

This screw adheres to precise dimensional tolerances, including a Class 2A thread fit for consistent engagement and UNC thread standards in the inch system. It conforms to ASME B18.2.1 for hex head screws and ASTM A307 for material properties, ensuring mechanical reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global supply chains.