S-92311A409 3/4"-16 x 1" 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 achieved through Class 3A thread fit and Rockwell B80 hardness for secure, vibration-resistant fastening
• Enhanced grip and surface protection from the cup tip design that minimizes component damage during installation
• Easy installation and removal with the 3/8" hex drive that provides excellent torque transmission
• Precision fine threading (3/4"-16 UNF) ensures tight, secure fits in demanding applications
• Reliable headless design allows for flush mounting in space-constrained assemblies
• Full regulatory compliance with ASME B18.3 standards and environmental regulations for worry-free global sourcing

Professional Applications & Engineering Value

This 3/4"-16 UNF Class 3A stainless steel set screw delivers exceptional engineering value in industrial applications where vibration resistance and precise positioning are critical. The 18-8 stainless steel material provides excellent corrosion resistance for machinery operating in humid or chemically aggressive environments. The cup tip design concentrates clamping force while minimizing damage to shaft surfaces, making it ideal for permanent positioning of gears, pulleys, and collars on rotating equipment. With its fine thread spacing and Class 3A thread fit, this headless screw maintains precise alignment in high-vibration applications such as automotive assemblies, industrial machinery, and precision equipment. The 3/8" hex drive ensures reliable torque application during installation, while the Rockwell B80 hardness guarantees the screw maintains its structural integrity under repeated stress cycles.

Specification Summary & Compliance

This precision fastener features 3/4"-16 UNF fine threads with Class 3A thread fit for superior dimensional accuracy and tight tolerances. Manufactured in compliance with ASME B18.3 specifications for set screws, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental regulations for hazardous substance restrictions. The right-hand thread direction and 1" length provide standardized installation across industrial applications.