S-92311A588 5/16"-18 x 1 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precise and secure fastening ensured by UNC coarse threading with Class 3A fit, minimizing backlash and vibration loosening.
• High torque application capability via the 5/32" hex drive, allowing for easy installation and removal with standard tools.
• Excellent surface hardness rated at Rockwell B80, providing enhanced wear resistance and durability under load.
• Reliable positioning and locking with a cup tip design, offering concentrated contact pressure for secure component retention.
• Headless design for space-saving installations, making it perfect for applications where protruding fasteners are not feasible.
• Compliance with industry standards including ASME B18.3, ensuring consistent quality and performance in mechanical assemblies.

Professional Applications & Engineering Value

This 5/16"-18 UNC Class 3A stainless steel set screw is engineered to address critical challenges in industrial settings, such as component slippage and corrosion-induced failure. The 18-8 stainless steel material provides excellent resistance to rust and chemicals, extending service life in demanding environments like machinery, automotive, and marine applications. Its coarse thread design and Class 3A fit offer tight tolerances, reducing the risk of loosening under vibration and ensuring reliable performance in dynamic assemblies. The hex drive and headless style facilitate easy installation in confined spaces, while the cup tip concentrates force for secure shaft or component locking. Ideal for precision engineering tasks, this set screw delivers consistent industrial reliability and meets rigorous ASME B18.3 specifications.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including UNC coarse threads with a Class 3A fit for high accuracy and minimal thread play. It conforms to ASME B18.3 manufacturing specifications, ensuring uniformity and reliability. Additionally, the product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and restricted substance management in industrial applications.