S-90044A149 3/8"-16 x 3" 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 from the black-oxide finish prolongs service life in harsh industrial environments, minimizing maintenance needs.
• Precise Class 3A thread fit provides tight, secure fastening with reduced vibration loosening for enhanced assembly integrity.
• Fully threaded design allows for maximum grip and adjustability along the entire length, ideal for varied material thicknesses.
• High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use.
• Hex socket drive enables easy installation with standard tools in confined spaces, improving assembly efficiency.
• Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global industrial use.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy-duty assemblies, such as machinery, automotive, and construction equipment. The coarse UNRC thread and Class 3A fit deliver secure fastening in high-vibration settings, preventing loosening and ensuring long-term joint reliability. Its fully threaded rod type accommodates varying material depths, while the hex drive style simplifies installation in tight spaces. With a Rockwell C37 hardness and 170,000 psi tensile strength, it withstands extreme loads and harsh conditions, reducing downtime and maintenance costs. The black-oxide surface treatment enhances corrosion resistance, making it suitable for outdoor or corrosive environments, and compliance with ASTM A574 guarantees consistent quality for industrial applications.

Specification Summary & Compliance

This socket head cap screw features a 3/8"-16 coarse thread with Class 3A precision fit and UNRC thread type for reliable engagement. It adheres to ASTM A574 manufacturing standards, ensuring high strength and durability. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for environmentally conscious industrial use.