S-92311A366 3/8"-16 x 2 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
• Exceptional holding power with a cup tip design that bites securely into shafts and components, preventing slippage.
• High-strength threading via UNC Class 3A fit and coarse spacing for faster installation and robust, vibration-resistant assemblies.
• Optimized torque transmission from the 3/16" hex drive, allowing for secure tightening in confined, headless applications.
• Enhanced durability with a Rockwell B80 hardness rating, providing excellent resistance to wear and deformation.
• Broad industrial compliance meeting ASME B18.3 specifications, ensuring consistent quality and interchangeability.
• Safe and sustainable design, fully compliant with RoHS 3 and REACH regulations for environmental and health safety.

Professional Applications & Engineering Value

This 18-8 Stainless Steel hex headless set screw is engineered to address critical challenges in precision assembly and motion control systems. Its corrosion-resistant material and Rockwell B80 hardness make it ideal for applications exposed to moisture, chemicals, or frequent adjustments, such as in machinery, automotive components, and electrical enclosures. The UNC Class 3A coarse thread ensures quick, secure fastening with high resistance to loosening under vibration, while the cup tip provides concentrated contact pressure for reliable positioning of gears, pulleys, and collars. By integrating right-hand threading and a headless design, it enables flush mounting in tight spaces, reducing protrusion risks and streamlining maintenance in industrial settings.

Specification Summary & Compliance

This set screw adheres to precise inch system measurements, featuring a 3/8"-16 UNC thread with Class 3A fit for tight tolerances and optimal thread engagement. It complies with ASME B18.3 manufacturing standards, ensuring dimensional consistency and performance reliability. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, confirming its safety for use in various industrial and consumer applications without hazardous substances.