S-92505A535 1/4"-20 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black Oxide finish, ideal for demanding industrial environments
• Exceptional thread precision with Class 3A fit for reliable, vibration-resistant assemblies
• High-strength performance from Alloy Steel with Rockwell C45 hardness for heavy-duty applications
• Secure, flush mounting enabled by headless design and extended tip for positive component location
• Easy installation and removal with 1/8" hex drive, compatible with standard tools
• Optimized for coarse-thread applications using 1/4"-20 UNC thread for rapid assembly in softer materials
• Extended tip design provides enhanced grip and prevents loosening in high-vibration settings

Professional Applications & Engineering Value

This Black Oxide Alloy Steel set screw delivers critical engineering solutions for industrial applications where vibration resistance and precise component positioning are paramount. The extended tip design creates positive engagement with mating parts, effectively preventing slippage in pulleys, gears, and collars. Manufactured to Class 3A thread standards with coarse UNC threading, it ensures rapid installation while maintaining exceptional clamp load integrity. The combination of Rockwell C45 hardness and corrosion-resistant Black Oxide surface treatment makes these headless set screws ideal for machinery, automotive, and manufacturing equipment where reliability under stress is non-negotiable.

Specification Summary & Compliance

This 1/4"-20 UNC set screw features precision Class 3A thread fit with controlled tip dimensions (0.156" diameter, 0.067" length) and maintains strict compliance with ASME B18.3 manufacturing specifications. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety standards for industrial components.