S-92311A126 5-40 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Precise, secure fastening ensured by Class 3A thread fit for minimal backlash and reliable positioning
• High mechanical strength with Rockwell B80 hardness, providing excellent resistance to deformation under load
• Easy installation in confined spaces using the compact 1/16" hex drive and headless design
• Enhanced grip and anti-loosening from the cup tip design, increasing holding power on shafts and components
• Wide compatibility with coarse UNC 5-40 threads for quick assembly and interchangeability in standard applications
• Long-term reliability backed by compliance with ASME B18.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 5-40 UNC set screw is engineered to address critical challenges in precision assemblies where space is limited and vibration resistance is paramount. The headless design and 1/16" hex drive allow for installation in tight areas without protruding elements, while the 18-8 Stainless Steel material offers excellent corrosion resistance, reducing maintenance in demanding conditions like machinery, automotive, and electronics. The Class 3A thread fit and coarse thread spacing ensure rapid, secure engagement, minimizing the risk of stripping and improving assembly efficiency. With its cup tip, it provides concentrated clamping force, preventing slippage in shaft collars and pulleys, making it a reliable choice for engineers seeking durability and compliance in set screw applications.

Specification Summary & Compliance

This set screw adheres to Class 3A thread tolerances for high precision, with UNC 5-40 coarse threads and a right-hand direction. It conforms to ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.