S-92313A105 4-40 x 3/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments.
• Precise and secure fastening ensured by Class 3A thread fit, minimizing the risk of loosening under vibration.
• High mechanical strength with Rockwell B80 hardness, providing excellent durability and resistance to wear.
• Easy installation in confined spaces thanks to the hex headless and 0.050" drive design.
• Reliable grip and minimal surface damage from the cup tip, enhancing holding power on shafts and components.
• Broad compatibility with coarse (UNC) thread spacing and right-hand direction, fitting standard industrial assemblies.
• Compliance with global regulations including RoHS 3 and REACH, ensuring safety and environmental standards.

Professional Applications & Engineering Value

This 4-40 UNC set screw is engineered to address critical challenges in precision machinery, automotive, and aerospace sectors. Made from 316 stainless steel, it offers exceptional resistance to corrosion and oxidation, making it suitable for demanding environments like chemical processing or outdoor equipment. The hex headless design with a 0.050" drive allows for easy torque application in tight spaces, while the Class 3A thread fit and coarse UNC thread ensure a secure, vibration-resistant connection. With a cup tip, it provides firm gripping without damaging surfaces, reducing maintenance needs and enhancing the longevity of assembled components in high-stress applications.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse threading with a 4-40 size. It meets ASME B18.3 specifications for consistency and reliability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free from hazardous substances and suitable for global industrial use.