S-94105A535 1/4"-20 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Exceptional holding power from Class 3A thread fit, ensuring vibration-resistant fastening in critical assemblies
• High-strength durability with Rockwell C45 hardness alloy steel, maintaining integrity under heavy loads
• Space-saving headless design for flush mounting where clearance is limited
• Quick installation using standard 1/8" hex tools, reducing assembly time and labor costs
• Reliable coarse threading (UNC 1/4"-20) for faster engagement and reduced cross-threading risks
• Industry compliance with ASME B18.3, RoHS 3, and REACH, ensuring regulatory acceptance

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical performance in precision machinery, automotive components, and industrial equipment where vibration resistance and corrosion protection are paramount. The headless hex drive design allows seamless integration into tight spaces without protruding hardware, while the Class 3A thread fit maintains clamping force under dynamic loads. Engineered with UNC coarse threads and Rockwell C45 hardness, it prevents stripping and wear in high-cycle applications. Ideal for securing gears, pulleys, and collars, this ASME B18.3 certified fastener ensures long-term reliability in demanding assembly environments.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with UNC 1/4"-20 coarse threads and Class 3A precision fit. The 3/8" length and flat tip provide consistent seating surfaces. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, alongside material certification per ASTM F912 standards.