S-94105A395 1/2"-13 x 2 1/2" 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 provided by Class 3A thread fit, ensuring precise, vibration-resistant fastening.
• High-strength durability from alloy steel and Rockwell C45 hardness, resisting deformation under heavy loads.
• Secure and efficient installation with 1/4" hex drive, allowing high torque application without slippage.
• Reliable positioning using the flat tip design, preventing component damage and maintaining alignment.
• Broad compatibility with 1/2"-13 UNC coarse threads, suitable for common industrial assemblies.
• Regulatory peace of mind through compliance with ASME B18.3, RoHS 3, and REACH standards.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical performance in demanding applications like machinery, automotive, and heavy equipment assemblies. Its headless design and hex drive enable flush mounting in confined spaces while providing secure torque transmission. The Class 3A thread fit and coarse UNC threads ensure rapid installation and superior resistance to loosening under vibration—addressing common failure points in dynamic industrial environments. Combined with Rockwell C45 hardness, it maintains clamping force in high-stress scenarios, making it an ideal heavy-duty fastener for permanent positioning of gears, pulleys, and collars on shafts.

Specification Summary & Compliance

This set screw features 1/2"-13 UNC coarse threads with Class 3A tolerance for precision fit, a 2 1/2" length, and flat tip configuration. Manufactured to ASME B18.3 specifications, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets.