S-92311A269 3-56 x 5/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• Exceptional holding power achieved through Class 3A thread fit and cup point design for maximum grip and vibration resistance
• Optimized torque transmission with hex drive design ensuring secure installation and preventing tool slippage
• Enhanced durability with Rockwell B80 hardness providing excellent wear resistance and mechanical strength
• Precision engineering with UNF fine threads delivering superior clamping force and load distribution
• Regulatory compliance meeting ASME B18.3 standards for consistent quality and performance
• Environmental safety with RoHS 3 and REACH compliance for sustainable industrial applications

Professional Applications & Engineering Value

This 3-56 UNF set screw delivers exceptional engineering value for precision assembly applications where space constraints and vibration resistance are critical. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for harsh environments including marine, chemical processing, and outdoor equipment. The hex headless design allows for flush mounting in confined spaces, while the cup point tip creates deep indentations in mating surfaces for superior anti-loosening performance. The Class 3A thread fit ensures precise engagement and consistent clamping force, preventing joint failure in high-vibration industrial machinery, automotive components, and precision instruments. These features combine to solve common assembly challenges including component slippage, corrosion-induced failure, and maintenance-intensive re-tightening cycles.

Specification Summary & Compliance

This set screw features precision 3-56 UNF fine threads with Class 3A thread fit for superior dimensional accuracy and engagement. The manufacturing complies with ASME B18.3 specifications ensuring consistent quality and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. The product maintains right-hand thread direction with 0.050" hex drive size and 5/16" length for standardized industrial applications.