S-90044A148 3/8"-16 x 2 1/2" 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.
• Black-oxide coating on alloy steel provides corrosion resistance and a durable finish, extending service life in harsh industrial environments.
• Class 3A thread fit offers precise, tight tolerances for secure fastening and vibration resistance in critical assemblies.
• Hex socket drive design allows for high torque application and easy installation in confined spaces, improving assembly efficiency.
• Rockwell C37 hardness delivers superior wear resistance and durability, maintaining integrity under repeated loads.
• Full threading ensures consistent grip along the entire length, enabling versatile use in various material thicknesses.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global industrial use.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address common industrial challenges, such as vibration loosening and corrosion in demanding settings. Its coarse UNRC threads and Class 3A fit provide excellent holding power in metals and composites, reducing maintenance needs in machinery, automotive, and construction applications. The hex drive facilitates quick, secure tightening with standard tools, minimizing assembly time while the high tensile strength and hardness prevent stripping and fatigue. Ideal for heavy-duty fastening, it ensures long-term reliability in environments where precision and durability are critical, supporting efficient production and reduced downtime.

Specification Summary & Compliance

This fastener features a 3/8"-16 thread size with coarse spacing and Class 3A thread fit for precise dimensional accuracy per UNRC standards. It meets ASTM A574 specifications for high-strength alloy steel screws, ensuring consistent manufacturing quality. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it adheres to environmental and safety requirements, making it suitable for global industrial use without hazardous substances.