S-90044A223 2"-8 x 12" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior tensile strength of 170,000 psi ensures reliable performance under extreme loads, reducing the risk of fastener failure in demanding applications.
• Exceptional durability from Rockwell C37 hardness and black-oxide alloy steel construction, offering excellent resistance to wear and corrosion in harsh industrial environments.
• Precise thread engagement with Class 2A thread fit and UN fine thread design, providing secure, vibration-resistant connections that maintain integrity over time.
• Optimized for high-torque applications featuring a 1 1/2" hex drive and standard socket head profile, allowing for easy installation and removal with standard tools.
• Versatile partial threading on a 12" length enables flexible clamping and precise adjustment in machinery, automotive, and structural assemblies.
• Compliance with rigorous standards including ASTM A574, RoHS 3, and REACH, ensuring material quality and environmental safety for global supply chains.
• Large head diameter of 3" distributes load effectively, minimizing surface damage and enhancing joint stability in heavy-duty fastening.

Professional Applications & Engineering Value

This 2"-8 UN fine thread socket head cap screw is engineered to address critical challenges in industrial settings where high strength, precision, and corrosion resistance are paramount. The black-oxide alloy steel material, combined with a Rockwell C37 hardness rating, provides exceptional durability against mechanical stress and environmental factors, reducing maintenance needs in applications like heavy machinery, construction equipment, and automotive systems. The fine thread and Class 2A thread fit ensure tight, reliable fastening that resists loosening under vibration, making it ideal for dynamic loads. With a partially threaded design and 12" length, it offers flexibility in assembly, allowing for secure clamping in variable thickness materials while the hex drive socket head facilitates efficient installation in confined spaces, boosting productivity and operational safety.

Specification Summary & Compliance

This socket head cap screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent accuracy and UN fine thread specifications with a 2"-8 size. It is manufactured in compliance with ASTM A574 for material and performance integrity, and meets regulatory requirements such as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental and health safety in industrial use.