S-94105A389 1/2"-13 x 7/8" 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 Rockwell C45 hardened alloy steel, preventing deformation under heavy loads
• Precise Class 3A thread fit ensures secure fastening with minimal backlash in critical assemblies
• 1/4" hex drive compatibility allows for high-torque installation with standard industrial tools
• Flat tip design provides maximum surface contact for secure positioning of components
• Coarse UNC threading enables quick installation and removal while maintaining strong engagement
• Headless construction offers flush mounting in space-constrained applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical performance in demanding industrial applications where vibration resistance and permanent positioning are paramount. The 1/2"-13 UNC coarse threads with Class 3A precision fit eliminate play in pulley systems, gear assemblies, and shaft collars, while the Rockwell C45 hardness maintains thread integrity under repeated stress cycles. The flat tip design creates substantial bearing surface against shafts and rotating components, preventing slippage in high-torque environments. Ideal for manufacturing equipment, automotive systems, and heavy machinery where corrosion-resistant set screws must withstand aggressive operating conditions without compromising clamping force.

Specification Summary & Compliance

Manufactured to ASME B18.3 and ASTM F912 specifications with Class 3A thread fit precision. Features 1/2"-13 UNC coarse threads, 7/8" length, and 1/4" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.