S-91864A032 10-24 x 5/16" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life and maintaining integrity in harsh industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, minimizing loosening over time.
• High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread integrity and drive features during repeated installation and removal.
• Efficient torque transmission with a 5/32" hex drive and standard socket head profile, allowing for easy installation in confined spaces with standard tools.
• Coarse UNC threads enable quicker assembly and better performance in materials prone to stripping or where rapid fastening is required.
• Full compliance with ASTM A574, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, supporting global supply chain requirements.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in heavy machinery. The 10-24 UNC coarse thread design, combined with a Class 3A fit, ensures secure fastening in dynamic applications like automotive assemblies, aerospace components, and precision equipment. The high tensile strength and Rockwell C37 hardness provide durability against mechanical stresses, while the black-oxide surface treatment enhances resistance to rust and wear. Ideal for use in confined spaces, the standard socket head and 5/32" hex drive facilitate efficient installation with common tools, reducing assembly time and maintenance costs in industrial and engineering settings.

Specification Summary & Compliance

This product features precise inch system measurements with a Class 3A thread fit for accurate engagement and UNC coarse threads to meet standard industrial requirements. It complies with ASTM A574 specifications for high-strength socket head cap screws, ensuring consistent quality and performance. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible manufacturing and use in global markets.