S-91251A147 3/4"-10 x 12" 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 industrial applications, reducing the risk of fastener failure.
• Black-oxide coating on alloy steel provides enhanced corrosion resistance and a durable, low-glare finish suitable for harsh environments.
• Class 3A thread fit with UNRC coarse threading offers superior vibration resistance and easier assembly in demanding conditions.
• Partially threaded design allows for precise clamping force control and secure fastening in structural assemblies.
• 5/8" hex drive and standard socket head enable high-torque installation with common tools, improving efficiency in maintenance and production.
• Rockwell C37 hardness delivers excellent wear resistance and longevity, minimizing replacement needs in heavy-duty use.
• Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to strict quality and environmental standards, supporting global supply chain requirements.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors, where high tensile strength and durability are paramount. The UNRC coarse thread and Class 3A fit provide superior grip and vibration resistance, preventing loosening under dynamic loads. Its partially threaded rod type allows for optimal stress distribution, reducing the risk of shear failure in bolted joints. Ideal for applications requiring 170,000 psi tensile strength, such as industrial equipment frames and structural supports, this fastener ensures long-term reliability while meeting ASTM A574 specifications for consistent performance in demanding environments.

Specification Summary & Compliance

This socket head cap screw features precise Class 3A thread fit and UNRC coarse threading with a thread size of 3/4"-10, ensuring accurate engagement and durability. Manufactured in accordance with ASTM A574 standards, it guarantees high-quality alloy steel construction. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible usage in global industrial applications.