S-90128A046 2-56 x 3/8" 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 applications, reducing the risk of fastener failure.
• Zinc-plated alloy steel construction provides excellent corrosion resistance, extending service life in harsh industrial environments.
• Class 3A thread fit with UNC coarse threading offers precise, secure engagement and easy installation, minimizing assembly time.
• Rockwell C37 hardness enhances durability and wear resistance, maintaining integrity under repeated use.
• Hex socket drive (5/64") allows for high-torque application with standard tools, preventing stripping and ensuring tight fastening.
• Full threading and right-hand direction enable uniform load distribution and straightforward, efficient mounting.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global industrial use.

Professional Applications & Engineering Value

This 2-56 UNC thread socket head cap screw is engineered from zinc-plated alloy steel to address common industrial challenges like vibration loosening and corrosion. The coarse thread spacing and Class 3A fit ensure quick, secure fastening in materials prone to stripping, while the hex drive design facilitates access in confined spaces. Ideal for machinery, automotive, and electronics assembly, it provides a robust solution for applications demanding high tensile strength and long-term reliability, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw features precise inch system measurements with a 3/8" length and Class 3A thread fit per UNC standards, ensuring dimensional accuracy. It meets ASTM A574 specifications for quality and performance, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety.