S-90044A164 1/2"-13 x 2 1/2" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi for reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish, extending service life in demanding industrial environments.
• Precise Class 3A thread fit ensures tight, secure connections with minimal play, enhancing assembly integrity.
• High hardness (Rockwell C37) provides excellent wear resistance, maintaining thread integrity through repeated use.
• Fully threaded design allows for maximum grip and adjustability along the entire length, offering versatile fastening solutions.
• Hex socket drive (3/8") enables high-torque installation with standard tools, simplifying maintenance and reducing installation time.
• Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety, meeting global regulatory standards.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial use, this Black-Oxide Alloy Steel Socket Head Cap Screw addresses critical challenges in machinery, automotive, and construction sectors. The coarse UNRC thread (1/2"-13) and Class 3A fit provide superior vibration resistance and ease of assembly in high-load conditions, minimizing loosening. Its fully threaded rod ensures consistent clamping force, ideal for applications requiring precise alignment and strength. The black-oxide surface treatment enhances durability against rust and wear, while the hex drive allows efficient installation in confined spaces. This screw delivers reliable performance in demanding environments, from assembly lines to structural frameworks, ensuring long-term operational safety.

Specification Summary & Compliance

This screw features a 1/2"-13 coarse thread with Class 3A fit per UNRC standards, ensuring high precision and interchangeability. Dimensions include a 2-1/2" length, 3/4" head diameter, and 3/8" hex drive. It complies with ASTM A574 for material consistency, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) for chemical safety, supporting global industrial and environmental standards.