S-90669A190 8-32 x 1/4" 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
• Enhanced gripping power through the brass soft tip design that prevents damage to mating surfaces while maintaining secure fastening
• Precise thread engagement with Class 3A thread fit ensuring tight tolerances and reliable performance in critical applications
• Easy installation and removal with the 5/64" hex drive design that provides excellent torque transmission
• Optimized for high-stress applications featuring Rockwell B80 hardness for consistent mechanical strength
• Reliable coarse threading with UNC 8-32 configuration for quick assembly and reduced cross-threading risks
• Industry compliance assurance meeting ASME B18.3 standards with full RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This 8-32 UNC set screw delivers exceptional engineering value in precision industrial applications where reliable fastening is critical. The 18-8 Stainless Steel construction provides excellent corrosion resistance, making it ideal for machinery, automotive components, and electronic enclosures exposed to moisture or chemicals. The brass soft tip offers a significant advantage by preventing damage to shaft surfaces while maintaining superior holding power, eliminating the need for additional protective components. The hex headless design with 5/64" drive allows for flush mounting in confined spaces, while the Class 3A thread fit ensures precise engagement with mating parts. These set screws are particularly valuable in applications requiring repeated adjustments without compromising fastener integrity, thanks to the Rockwell B80 hardness and coarse thread spacing that resist wear and stripping.

Specification Summary & Compliance

This precision fastener features 8-32 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and engagement. The 1/4" length and 0.164" thread diameter provide consistent performance across applications. Manufacturing compliance includes ASME B18.3 specifications for dimensional standards, along with full adherence to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The right-hand thread direction and headless configuration with 5/64" hex drive ensure compatibility with standard installation tools and industry practices.