S-92220A310 2-56 x 3/16" ASTM A574 Alloy Steel Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish prolongs service life in harsh industrial environments, minimizing maintenance needs.
• Precision Class 3A thread fit guarantees secure, vibration-resistant connections, enhancing assembly integrity and reducing loosening over time.
• Low-profile socket head design allows for installation in tight spaces, offering flexibility in compact machinery and equipment.
• High hardness (Rockwell C39) provides excellent wear resistance, maintaining thread integrity through repeated use and disassembly.
• Fully threaded right-hand coarse UNC thread enables quick and easy installation, speeding up assembly processes in production lines.
• Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, supporting sustainable procurement.

Professional Applications & Engineering Value

This 2-56 UNC Socket Head Cap Screw is engineered to address critical fastening challenges in precision industries such as aerospace, automotive, and electronics. The black-oxide alloy steel construction delivers robust corrosion resistance, essential for components exposed to moisture or chemicals, while the low-profile head minimizes protrusion in confined assemblies. With a coarse thread and Class 3A fit, it ensures rapid installation and reliable clamping force, reducing assembly time and preventing thread stripping. Ideal for securing sensitive parts in machinery, this screw combines high tensile strength and durability to withstand dynamic loads, making it a trusted choice for engineers seeking long-term performance and regulatory compliance.

Specification Summary & Compliance

This socket head cap screw features precise inch system measurements, including a thread size of 2-56 UNC with a Class 3A thread fit for tight tolerances. It meets ASTM A574 specifications for high-strength alloy steel fasteners and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability in industrial applications.