S-91688A228 5/16"-18 x 1" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced component protection through the permanent swivel tip design that minimizes surface damage during installation
• Maximum holding power achieved with Rockwell C54 hardness for reliable, long-term fastening applications
• Precise installation control with 5/32" hex drive and Class 2A thread fit ensuring accurate torque application
• Optimized for coarse thread applications using UNC 5/16"-18 threads for quick assembly in various materials
• Reduced maintenance requirements with compliant RoHS 3 and REACH standards for safe, sustainable operation
• Versatile angular adjustment featuring 9° maximum swivel angle for accommodating misaligned components

Professional Applications & Engineering Value

This 5/16"-18 UNC hex headless set screw delivers exceptional engineering value in demanding industrial applications where component security and surface preservation are critical. The 18-8 stainless steel construction provides excellent corrosion resistance, while the permanent swivel tip technology—crafted from 304 stainless steel—distributes pressure evenly to prevent damage to shafts, collars, and precision machinery components. With Class 2A thread fit and coarse thread spacing, installation is both efficient and reliable, maintaining consistent clamping force in high-vibration environments. The Rockwell C54 hardness ensures the screw withstands repeated adjustments without deformation, making it ideal for permanent positioning applications in manufacturing equipment, automotive assemblies, and industrial machinery where right-hand thread configurations are standard.

Specification Summary & Compliance

This set screw maintains Class 2A thread fit per UNC standards with precise dimensional accuracy (0.313" thread diameter, 1" length). Manufacturing adheres to industry specifications for inch system fasteners, including proper coarse thread spacing and 5/32" hex drive compatibility. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.