S-91236A806 5/8"-11 x 3" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in harsh industrial environments.
• High tensile strength of 60,000 psi ensures reliable, heavy-duty fastening for demanding applications.
• Rockwell B69 hardness provides excellent durability and resistance to wear and deformation.
• Coarse UNC threads with Class 2A fit offer quick assembly and secure holding power.
• External hex drive and hex head design allows for easy installation with standard tools and high torque application.
• Partially threaded shank enables precise clamping force on specific joint sections.
• Compliance with ASME B18.2.1 and ASTM A307 guarantees consistent quality and interchangeability.

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw is engineered for robust industrial fastening where reliability is critical. Made from steel and finished with zinc plating, it effectively combats corrosion in outdoor or humid settings, reducing maintenance needs. The coarse thread and Class 2A thread fit ensure quick, secure installations in structural assemblies, machinery, and construction projects, minimizing the risk of loosening under vibration. Its partial threading allows for focused clamping, making it ideal for applications requiring precise load distribution, such as in heavy equipment and metal frameworks, while the external hex drive facilitates efficient tightening with common wrenches.

Specification Summary & Compliance

This screw adheres to ASME B18.2.1 and ASTM A307 specifications, with a Class 2A thread fit for standard tolerance and interchangeability. It is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory adherence for global industrial use.