S-91274A064 8-32 x 3/4" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-flake coating, ideal for harsh industrial environments and extending service life.
• Exceptional tensile strength of 170,000 PSI ensures reliable performance under high-stress applications, reducing the risk of fastener failure.
• Precise Class 3A thread fit provides superior engagement and vibration resistance, maintaining joint integrity in demanding conditions.
• High hardness (Rockwell C37) offers excellent wear resistance and durability, minimizing deformation during installation and use.
• Hex socket drive (9/64") allows for high torque application and easy installation in confined spaces, improving assembly efficiency.
• Coarse UNC thread spacing enables quicker assembly and disassembly, saving time in maintenance and production workflows.
• Full compliance with ASME B18.3, ASTM A574, and ASTM B117 guarantees consistent quality and interchangeability for professional engineering projects.

Professional Applications & Engineering Value

This 8-32 UNC Socket Head Cap Screw is engineered for high-performance applications where reliability is critical. The zinc-flake-coated alloy steel construction provides robust corrosion resistance, addressing common failure points in industrial settings like machinery, automotive assemblies, and outdoor equipment. With a 170,000 PSI tensile strength and Rockwell C37 hardness, it withstands extreme loads and vibrations, preventing loosening and fatigue in heavy-duty fastening. The Class 3A thread fit and coarse thread spacing ensure secure, rapid installation, reducing downtime. Ideal for use in aerospace, manufacturing, and construction, this screw delivers consistent performance under stringent operational demands, backed by full compliance with industry standards.

Specification Summary & Compliance

This screw features a Class 3A thread fit with UNC coarse thread spacing and precise dimensions, including a 3/4" length and 9/64" hex drive. It meets ASME B18.3 for socket head cap screws, ASTM A574 for alloy steel material, and ASTM B117 for salt spray testing, ensuring dimensional accuracy and durability. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global industrial supply chains.