S-90044A163 1/2"-13 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 applications, reducing the risk of fastener failure.
• Superior corrosion resistance provided by the black-oxide finish extends service life in demanding industrial environments.
• Precise Class 3A thread fit guarantees secure, vibration-resistant connections for improved assembly integrity.
• High hardness rating (Rockwell C37) enhances wear resistance and durability under repeated use.
• Fully threaded design allows for maximum grip and adjustability across the entire 2-1/4" length.
• Hex socket drive enables easy installation and removal in confined spaces with standard tools.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws address critical challenges in machinery assembly, automotive manufacturing, and structural frameworks. The UNRC coarse thread and Class 3A fit provide excellent resistance to loosening under vibration, while the high tensile strength and Rockwell C37 hardness ensure longevity in high-load scenarios. The black-oxide surface treatment offers enhanced corrosion protection, making these fasteners ideal for environments exposed to moisture or chemicals. Their fully threaded design and hex drive compatibility simplify installation in tight spaces, reducing assembly time and improving operational efficiency.

Specification Summary & Compliance

This socket head cap screw features a 1/2"-13 UNRC coarse thread with Class 3A tolerance for precise fit, and is manufactured to ASTM A574 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards.