S-91236A868 3/4"-10 x 12" 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 performance under heavy loads and stress
• Rockwell B69 hardness provides excellent durability and resistance to wear and deformation
• Class 2A thread fit offers consistent, precise assembly with standard UNC coarse threads
• External hex drive design allows for easy installation and removal with common tools
• Partial threading enables secure fastening in applications requiring precise grip length
• Compliance with ASME B18.2.1 and ASTM A307 guarantees quality and interoperability in mechanical systems

Professional Applications & Engineering Value

This heavy-duty hex head screw is engineered for demanding applications in construction, machinery assembly, and structural frameworks where high tensile strength and corrosion resistance are critical. The steel construction with zinc plating protects against rust and environmental degradation, while the UNC coarse threads and Class 2A fit ensure quick, secure fastening even in vibrating or high-stress conditions. Its 12-inch length and partial threading make it ideal for connecting thick materials or components that require adjustable clamping force, reducing the risk of loosening and improving overall system reliability in industrial settings.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit for consistent dimensional accuracy and meets ASME B18.2.1 and ASTM A307 specifications for mechanical properties and manufacturing standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.