S-93386A442 1/4"-20 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 400 Nickel material for extended service life in harsh industrial environments
• Precise Class 3A thread fit ensures tighter tolerances and more reliable fastening in critical applications
• Maximum holding power with cup point design that bites into mating surfaces to prevent component slippage
• Space-saving headless design allows for flush mounting where clearance is limited
• Easy installation and removal with 1/8" hex drive that provides secure tool engagement
• Reliable coarse UNC threading offers faster assembly and reduced cross-threading risk
• Comprehensive compliance with ASME B18.3 standards and environmental regulations for quality assurance

Professional Applications & Engineering Value

This 1/4"-20 UNC Class 3A set screw delivers exceptional engineering value in demanding industrial applications where vibration resistance and permanent positioning are critical. The 400 Nickel construction provides outstanding corrosion resistance, making it ideal for marine, chemical processing, and outdoor equipment applications. The hex headless design with 1/8" drive enables installation in confined spaces while maintaining high torque capability. The cup point tip creates permanent indentation in mating surfaces, preventing rotational movement in pulleys, gears, and collars. These set screws solve common engineering challenges of component slippage and corrosion-induced failure, ensuring long-term reliability in heavy-duty industrial applications where maintenance access is limited.

Specification Summary & Compliance

This set screw features precision 1/4"-20 UNC coarse threading with Class 3A thread fit for superior dimensional accuracy and tight tolerances. Manufactured to ASME B18.3 specifications for consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. The right-hand thread direction and standardized dimensions guarantee compatibility with existing equipment and tooling systems.