S-91236A744 1/2"-13 x 10" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust and extends service life in demanding environments
• Exceptional tensile strength of 60,000 psi ensures reliable performance under heavy loads and high-stress applications
• Optimized torque transmission through the external hex drive and 3/4" head width for secure, efficient installation
• Durable material construction using steel with Rockwell B69 hardness for long-term structural integrity and wear resistance
• Precise thread engagement with Class 2A UNC coarse threads providing excellent vibration resistance and faster assembly
• Versatile partial threading design allows for both clamping and unthreaded shank benefits in various industrial setups
• Full regulatory compliance meeting ASME B18.2.1, ASTM A307, RoHS 3, and REACH for safe, standardized use

Professional Applications & Engineering Value

This 1/2"-13 UNC hex head screw is engineered to address critical industrial fastening challenges where vibration resistance, high tensile loads, and environmental durability are paramount. The steel construction with zinc plating provides a robust barrier against corrosion, making it ideal for outdoor machinery, structural steel connections, and heavy equipment assembly. The coarse UNC thread and Class 2A fit ensure rapid installation and reliable performance in materials where fine threads might strip or fail. With partial threading, it offers superior clamping force where needed while maintaining an unthreaded shank for shear strength, preventing joint loosening under dynamic loads. These features make it a preferred choice for construction, manufacturing, and infrastructure projects requiring heavy-duty bolts that comply with ASME B18.2.1 and other industrial standards.

Specification Summary & Compliance

This screw maintains precise Class 2A thread fit per UNC standards, ensuring consistent engagement and dimensional accuracy. It is manufactured in compliance with ASME B18.2.1 and ASTM A307 specifications, guaranteeing mechanical properties and performance reliability. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use worldwide.