S-91410A728 1/2"-13 x 4" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with coarse UNC threads that resist loosening under vibration and heavy loads
• Superior durability from Rockwell B80 hardness steel, providing excellent wear resistance and long service life
• Easy installation and removal with the external square drive and square head design, allowing for high-torque application
• Reliable thread fit with Class 2A tolerance ensuring consistent performance and interchangeability
• Secure fastening thanks to the cup tip design that digs into surfaces for positive positioning
• Industry compliance meeting ASME B18.6.2 specifications for dimensional accuracy and performance
• Environmental responsibility with RoHS 3 and REACH compliance, safe for various industrial applications

Professional Applications & Engineering Value

This 1/2"-13 UNC steel square head set screw is engineered to solve critical fastening challenges in heavy machinery, automotive assemblies, and construction equipment. The coarse thread design provides superior resistance to vibrational loosening, while the Rockwell B80 hardness ensures the screw maintains its integrity under extreme stress. The square head with external square drive allows for high-torque installation with standard tools, preventing stripping and ensuring secure placement in demanding environments. Its 4" length and cup tip offer deep penetration and firm gripping on shafts, collars, and pulleys, making it ideal for permanent or semi-permanent applications where reliability is non-negotiable.

Specification Summary & Compliance

This set screw features a 1/2"-13 UNC coarse thread with Class 2A thread fit for precise dimensional tolerance. It complies with ASME B18.6.2 manufacturing standards, ensuring consistent quality and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.