S-90669A622 3/8"-16 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional thread engagement through Class 3A thread fit ensuring reliable, vibration-resistant fastening
• Enhanced component protection with soft brass tip that prevents damage to mating surfaces during installation
• Optimized torque transmission via 3/16" hex drive for secure, slip-free tightening in confined spaces
• Long-term durability supported by Rockwell B80 hardness, maintaining performance under mechanical stress
• Broad compatibility with UNC coarse threading (3/8"-16) for quick assembly in various applications
• Regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, quality-assured usage

Professional Applications & Engineering Value

This 3/8"-16 UNC set screw delivers critical engineering solutions where precision and reliability are paramount. The 18-8 stainless steel body resists oxidation and chemical exposure, making it suitable for machinery, automotive, and marine equipment exposed to moisture or temperature variations. Its headless design and hex drive allow flush mounting in tight assemblies, while the brass tip eliminates galling on shafts or collars—preventing costly surface damage. With coarse thread spacing and Class 3A thread fit, it ensures rapid installation and high clamp load retention, reducing maintenance cycles in industrial set screw applications. This combination addresses common challenges like part slippage, corrosion-induced failure, and assembly inefficiency.

Specification Summary & Compliance

The set screw adheres to ASME B18.3 manufacturing specifications, with a Class 3A thread fit for precise dimensional accuracy in Unified Coarse (UNC) threading. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring the absence of restricted hazardous substances. Thread diameter is 0.375" with a coarse pitch, and the product meets industry standards for mechanical performance and environmental safety.