S-92311A413 3/4"-16 x 3" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments.
• Exceptional holding power ensured by the Class 3A thread fit, providing tighter tolerances and more secure fastening.
• High durability and deformation resistance from Rockwell B80 hardness, maintaining integrity under heavy loads.
• Secure, non-slip installation with the 3/8" hex drive, allowing for high torque application without head protrusion.
• Enhanced grip and minimal surface damage thanks to the cup tip design, ideal for precise positioning on shafts and collars.
• Reliable fine thread engagement with UNF 3/4"-16 threads, offering improved adjustment and vibration resistance.
• Broad industrial compliance meeting ASME B18.3 standards and environmental regulations like RoHS 3 and REACH.

Professional Applications & Engineering Value

This 18-8 stainless steel set screw is engineered to address critical challenges in industrial assembly, where vibration resistance and corrosion prevention are paramount. The headless design with a 3/8" hex drive allows for flush mounting in confined spaces, reducing the risk of snagging and improving safety. Its Class 3A thread fit and fine UNF threading ensure precise, repeatable adjustments in machinery components like couplings, pulleys, and gears, minimizing backlash and maintaining alignment. The cup tip concentrates force for a firm grip without excessive marring, making it ideal for shaft securing applications. Coupled with Rockwell B80 hardness, it withstands repetitive stress, offering a reliable solution for high-performance fastening in automotive, aerospace, and manufacturing sectors.

Specification Summary & Compliance

This set screw features a 3/4"-16 UNF thread with Class 3A precision fit for tight dimensional accuracy and superior thread engagement. It adheres to ASME B18.3 manufacturing specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial environments without hazardous substances.