S-90128A923 3/4"-10 x 4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in critical applications.
• Zinc-plated alloy steel construction provides excellent corrosion resistance, extending service life in harsh industrial and outdoor environments.
• Class 3A thread fit offers superior precision and tighter tolerances for secure, vibration-resistant assemblies in machinery and equipment.
• 5/8" hex drive design allows for high-torque installation with standard tools, speeding up assembly and reducing labor time.
• Partially threaded shank enables precise clamping force control, ideal for applications requiring specific grip lengths without thread interference.
• Rockwell C37 hardness ensures high durability and wear resistance, maintaining integrity through repeated use and heavy loads.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations, ensuring safe and reliable sourcing for global projects.

Professional Applications & Engineering Value

This 3/4"-10 UNC Socket Head Cap Screw is engineered to address common industrial challenges such as vibration loosening and material fatigue. The zinc-plated alloy steel offers robust protection against rust and corrosion, making it suitable for construction, heavy machinery, and outdoor equipment where exposure to moisture and chemicals is a concern. The coarse UNC thread and Class 3A fit provide quick assembly and secure fastening in high-vibration environments, reducing maintenance needs. With a partially threaded design, it allows for precise joint clamping in structural applications, ensuring optimal load distribution and longevity. Ideal for industrial screws and heavy-duty cap screws, this fastener delivers consistent performance in demanding settings, from manufacturing plants to infrastructure projects.

Specification Summary & Compliance

This socket head cap screw features a 3/4"-10 UNC coarse thread with Class 3A thread fit for precise dimensional accuracy. It is manufactured in accordance with ASTM A574 specifications, ensuring high-quality alloy steel material and consistent performance. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible procurement. Thread direction is right-hand, with a minimum thread length of 2 inches and a Rockwell C37 hardness rating, providing reliable mechanical properties for industrial use.