S-91410A578 5/16"-18 x 1/2" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with coarse UNC threads that provide faster installation and stronger resistance against vibration loosening
• Exceptional durability from Rockwell B80 hardened steel construction that withstands heavy-duty industrial use
• Precise thread engagement with Class 2A fit ensuring consistent performance and reliable fastening in demanding applications
• Secure torque transmission through the external square drive design that prevents tool slippage during installation
• Enhanced grip capability with cup tip design that creates concentrated pressure points for maximum component retention
• Regulatory compliance assurance meeting ASME B18.6.2 specifications for dimensional accuracy and performance standards
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

This 5/16"-18 UNC Square Head Set Screw delivers critical engineering value in applications requiring secure component positioning and rotational prevention. The steel construction with Rockwell B80 hardness provides the necessary strength to withstand constant mechanical stress in machinery, automotive assemblies, and industrial equipment. The coarse thread spacing ensures rapid installation while maintaining holding power in vibrating environments, addressing common loosening issues in dynamic systems. The external square drive allows for high-torque application without stripping, while the cup tip design creates localized deformation for positive locking action. Engineered to ASME B18.6.2 standards, this set screw offers reliable performance in pulley systems, gear assemblies, and coupling applications where precise component alignment is critical.

Specification Summary & Compliance

This set screw features 5/16"-18 UNC coarse threads with Class 2A thread fit for standard industrial applications, manufactured to precise dimensional requirements. The product complies with ASME B18.6.2 specifications for square head set screws, ensuring consistent quality and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. The 1/2" length and right-hand thread direction provide standard configuration for broad compatibility across industrial fastening systems.