S-90128A519 5/8"-11 x 2 1/4" 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.
• Class 3A thread fit provides superior precision and tight tolerances for secure, vibration-resistant assemblies in demanding environments.
• Zinc-plated alloy steel construction offers excellent corrosion resistance, extending service life and reducing maintenance costs.
• Rockwell C37 hardness enhances durability and wear resistance, ideal for repetitive use in heavy machinery and equipment.
• 1/2" hex drive design allows for easy installation and high torque application with standard tools, improving assembly efficiency.
• Fully threaded UNC coarse thread ensures quick engagement and strong holding power in various materials, speeding up production processes.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards for safety and environmental regulations, supporting global supply chain requirements.

Professional Applications & Engineering Value

This zinc-plated alloy steel socket head cap screw is engineered to address critical challenges in industrial settings, such as vibration loosening and corrosion-induced failures. The 5/8"-11 UNC coarse thread and Class 3A thread fit provide precise, secure fastening in heavy-duty applications like machinery assembly, automotive components, and construction equipment. With a high tensile strength of 170,000 PSI and Rockwell C37 hardness, it withstands extreme loads and repetitive stress, reducing downtime and maintenance. The zinc plating adds a protective layer against moisture and chemicals, making it suitable for harsh environments. Ideal for use with a 1/2" hex drive, these screws ensure efficient installation and long-term reliability in OEM and MRO operations.

Specification Summary & Compliance

This product features precise Class 3A thread fit with UNC coarse threads and dimensions including a 2 1/4" length and 5/8"-11 thread size. It complies with ASTM A574 specifications for socket head cap screws, ensuring consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, supporting environmental and safety regulations in industrial procurement.