S-90117A717 1/2"-13 x 1 1/4" ASME B18.3 Alloy Steel Wire-Lockable Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi for reliable performance in high-stress industrial applications.
• Superior corrosion resistance provided by the black-oxide coating, extending service life in harsh environments.
• Precise Class 3A thread fit ensures tighter tolerances and secure, vibration-resistant fastening.
• High hardness rating (Rockwell C37) for excellent wear resistance and durability under load.
• Hex socket drive design allows for high torque application and easy installation in confined spaces.
• Coarse UNC thread enables quick assembly and disassembly, reducing labor time.
• Full threading along the entire length provides maximum grip and uniform clamping force.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy machinery, automotive assembly, and construction equipment. Its high tensile strength and Rockwell C37 hardness prevent stripping and shearing under extreme loads, while the corrosion-resistant coating protects against rust in humid or outdoor settings. The 1/2"-13 UNC coarse thread with Class 3A fit offers superior engagement, minimizing loosening from vibrations. Ideal for applications requiring reliable fully threaded fasteners, it ensures consistent performance in demanding industrial fastening scenarios, reducing maintenance needs and downtime.

Specification Summary & Compliance

This socket head cap screw features a 1/2"-13 UNC coarse thread with Class 3A thread fit for high precision. It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in global markets.