S-91410A951 7/8"-9 x 2" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Exceptional Durability – Made from high-strength steel with Rockwell B80 hardness for superior wear resistance and long service life in demanding industrial environments.
• Secure Fastening – Coarse UNC threading with Class 2A fit ensures reliable engagement and vibration resistance, reducing the risk of loosening under heavy loads.
• Easy Installation & Removal – Square head with external square drive allows for high-torque application using standard wrenches, speeding up assembly and maintenance.
• Optimized Grip – Cup tip design concentrates clamping force for a firm hold on shafts and collars, preventing slippage in machinery applications.
• Industry Compliance – Meets ASME B18.6.2 specifications for dimensional accuracy and performance, ensuring interchangeability and reliability.
• Environmental Responsibility – RoHS 3 and REACH compliant, making it suitable for use in regulated industries without hazardous substance concerns.
• Right-Hand Thread Convenience – Standard thread direction simplifies installation and aligns with common industrial practices.

Professional Applications & Engineering Value

This 7/8"-9 UNC Square Head Set Screw is engineered to address critical fastening challenges in heavy machinery, automotive, and manufacturing sectors. The steel construction with Rockwell B80 hardness provides excellent resistance to deformation and fatigue, ideal for securing rotating components like pulleys, gears, and couplings. The coarse thread spacing and Class 2A thread fit ensure quick assembly and reliable performance in high-vibration environments, reducing maintenance downtime. With its external square drive and cup tip, it delivers concentrated clamping force, preventing axial movement and enhancing operational safety. Compliant with ASME B18.6.2, it guarantees precision and interoperability in industrial set screw applications, supporting efficient production and equipment longevity.

Specification Summary & Compliance

This set screw features a 7/8"-9 UNC coarse thread with Class 2A tolerance for precise fit and ease of assembly. It adheres to ASME B18.6.2 manufacturing standards, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without restricted substances.