S-92845A113 4-40 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional holding power due to Class 3A thread fit, ensuring tight, secure fastening in precision assemblies
• Enhanced durability with Rockwell B80 hardness, providing reliable performance under repeated use
• Easy installation and removal with 0.050" hex drive, minimizing tool slippage and damage
• Improved grip and alignment from the extended tip design, reducing component movement in machinery
• Wide compatibility with UNC coarse threads and 4-40 size, fitting standard industrial applications seamlessly
• Headless design for space-saving installations where flush surfaces are critical

Professional Applications & Engineering Value

This 4-40 UNC set screw is engineered to address common industrial challenges, such as component slippage and corrosion-induced failures. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for demanding environments like automotive assemblies, electronic enclosures, and precision machinery. The extended tip and Class 3A thread fit ensure a firm grip on shafts and collars, reducing the risk of loosening under vibration. Its headless design and hex drive allow for compact, tool-accessible installations, enhancing reliability in tight spaces. By meeting ASME B18.3 standards, this screw delivers consistent performance for engineers seeking durable, compliant fastening solutions.

Specification Summary & Compliance

This set screw features precise dimensions, including a 1/4" length, 4-40 UNC coarse threads with Class 3A thread fit for tight tolerances, and an extended tip with diameter and length tolerances of -0.005" to 0". It complies with ASME B18.3 manufacturing specifications and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence for industrial use.