S-92311A292 6-40 x 5/8" 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 thread precision with Class 3A fit ensuring tight, reliable fastening and vibration resistance
• Secure installation and removal through the 1/16" hex drive that prevents stripping under high torque
• Enhanced gripping capability from the cup tip design that bites into materials for permanent positioning
• Optimized for fine-thread applications with 6-40 UNF right-hand threads providing increased tensile strength
• Consistent mechanical performance thanks to Rockwell B80 hardness maintaining dimensional stability
• Headless design allowing flush mounting in space-constrained assemblies

Professional Applications & Engineering Value

This 6-40 UNF Class 3A set screw delivers critical engineering solutions where precision alignment and permanent component positioning are paramount. The 18-8 Stainless Steel material provides excellent corrosion resistance for demanding environments including marine, chemical processing, and outdoor equipment. The fine thread spacing and Class 3A thread fit create superior clamping force distribution, preventing loosening under vibration in machinery, automotive, and aerospace applications. The cup tip design concentrates pressure on a small contact area, creating permanent dimples in shafts and collars for secure locking. Combined with the 1/16" hex drive, this headless fastener enables reliable installation in confined spaces while maintaining the integrity of adjacent components.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit for precision tolerance. Features 6-40 UNF fine threads with right-hand direction, 5/8" length, and Rockwell B80 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use worldwide.