S-91375A799 5/8"-11 x 1 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Superior holding power from Class 3A thread fit, ensuring tight, secure fastening in high-vibration applications
• High-strength performance with Rockwell C45 hardness, providing reliable resistance to wear and deformation
• Easy installation and removal with 5/16" hex drive, allowing efficient maintenance with standard tools
• Secure grip on shafts and components thanks to the cup tip design, preventing slippage in rotational assemblies
• Wide compatibility with coarse UNC threads (5/8"-11), suitable for various industrial equipment and machinery
• Compliance with global standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory adherence

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address critical challenges in industrial settings, such as component slippage and corrosion-induced failure. The Class 3A thread fit and coarse UNC threads provide a precise, vibration-resistant connection, ideal for securing pulleys, gears, and collars on rotating shafts. The headless design and cup tip ensure flush mounting and enhanced gripping force, reducing the risk of loosening under dynamic loads. With Rockwell C45 hardness, it maintains integrity in high-stress applications, from heavy machinery to automotive assemblies, while the black-oxide finish offers added protection against rust and wear, extending component lifespan in demanding environments.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with precise Class 3A thread fit and UNC coarse threads (5/8"-11) for reliable dimensional accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory acceptance in global markets.