S-91236A863 3/4"-10 x 8" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• High tensile strength of 60,000 psi ensures reliable performance in demanding industrial applications, reducing the risk of fastener failure.
• Zinc plating provides excellent corrosion resistance, extending the service life of the screw in various environmental conditions.
• Coarse UNC threads and Class 2A fit allow for quick and easy installation while maintaining secure fastening.
• External hex drive and hex head design offer superior torque transmission and easy wrench access for efficient assembly.
• Partially threaded shank provides unthreaded grip length for better clamping force in structural connections.
• Manufactured to ASME B18.2.1 and ASTM A307 standards guarantees consistent quality and dimensional accuracy.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and suitability for global markets.

Professional Applications & Engineering Value

This 3/4"-10 UNC hex head screw delivers exceptional engineering value in heavy-duty industrial applications where vibration resistance and structural integrity are critical. The steel construction with Rockwell B69 hardness provides excellent durability against shear and tensile stresses, while the zinc plating offers reliable protection against corrosion in harsh environments. The coarse thread design ensures faster installation and better performance in materials where fine threads might strip. Particularly valuable in construction, machinery assembly, and structural steel connections, this partially threaded screw allows the unthreaded portion to act as a precise dowel, preventing lateral movement in bolted joints. The external hex drive configuration enables high-torque application with standard tools, making it ideal for maintenance and production lines where efficiency matters.

Specification Summary & Compliance

This hex head screw features 3/4"-10 UNC coarse threads with Class 2A thread fit for standard clearance applications, ensuring proper engagement and dimensional accuracy. The 8" length with 2" minimum thread length provides versatile fastening capabilities. Manufactured according to ASME B18.2.1 specifications and ASTM A307 material standards, it guarantees consistent mechanical properties and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components.