S-91864A010 2-56 x 5/32" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
• Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in demanding environments.
• Black-oxide finish on alloy steel offers enhanced corrosion resistance, extending the screw's service life in various operating conditions.
• Hex socket drive (5/64") allows for high-torque installation with standard tools, enabling secure fastening in confined spaces.
• Fully threaded 2-56 UNC coarse thread design ensures maximum grip and holding power across the entire length for consistent clamping force.
• Rockwell C37 hardness provides excellent wear resistance, maintaining thread integrity through repeated use and assembly cycles.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting rigorous industry standards.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this Black-Oxide Alloy Steel Socket Head Cap Screw addresses critical fastening challenges with its robust construction. The 2-56 UNC coarse threads and Class 3A fit deliver precise alignment and superior load distribution, preventing thread stripping in high-vibration machinery, automotive assemblies, and precision equipment. The hex drive design facilitates easy installation in tight spaces, while the 170,000 psi tensile strength ensures long-term reliability under dynamic stresses. Ideal for applications requiring durable, high-strength fasteners that comply with stringent regulatory standards, this screw minimizes maintenance needs and enhances operational safety in manufacturing, aerospace, and heavy equipment sectors.

Specification Summary & Compliance

This socket head cap screw features a 2-56 UNC thread with Class 3A precision fit, ensuring tight tolerances and consistent performance. It adheres to ASTM A574 specifications for alloy steel socket head cap screws, confirming material integrity and manufacturing consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and restricted substance management. With a thread diameter of 0.086" and a length of 5/32", it meets exact dimensional requirements for reliable integration into engineered systems.