S-91410A755 5/16"-18 x 3 1/2" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with coarse UNC threads that provide superior resistance to vibration and loosening in demanding applications
• Optimized torque transmission through square head design and external square drive for secure installation without stripping
• Enhanced durability with Rockwell B80 hardness steel construction that withstands repeated adjustments and heavy loads
• Precision thread engagement with Class 2A fit ensuring consistent performance and reliable fastening in industrial assemblies
• Simplified installation with right-hand thread direction and cup tip design for straightforward positioning and secure component retention
• Regulatory compliance assurance meeting ASME B18.6.2 specifications for dimensional accuracy and performance reliability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries and global markets

Professional Applications & Engineering Value

This 5/16"-18 UNC thread set screw delivers critical engineering solutions for industrial applications requiring maximum holding power and vibration resistance. The steel construction with Rockwell B80 hardness provides exceptional strength-to-weight ratio, preventing deformation under heavy loads while maintaining durability through repeated adjustment cycles. The coarse thread spacing ensures rapid installation and superior resistance to loosening in high-vibration environments common in machinery, automotive, and manufacturing equipment. The square head design with external square drive enables high-torque application without slippage, making it ideal for securing gears, pulleys, and collars where precise positioning is critical. This 3 1/2" length set screw offers extended engagement for deep mounting applications while maintaining Class 2A thread fit precision throughout the fastener length.

Specification Summary & Compliance

This set screw features 5/16"-18 UNC coarse threads with Class 2A thread fit tolerance for precise engagement and reliable performance. Manufactured to ASME B18.6.2 specifications ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, meeting environmental standards for restricted substances. The right-hand thread direction and cup tip type provide standardized installation characteristics across industrial applications.