S-90251A189 8-32 x 3/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with Nylon Patch thread locker that maintains secure locking from -50° to 250°F
• Superior corrosion resistance due to 18-8 Stainless Steel construction, ideal for harsh industrial environments
• High-strength performance backed by Rockwell B80 hardness for reliable, long-term fastening
• Precise thread engagement with Class 3A fit and UNC coarse threads ensuring consistent, secure installations
• Space-saving design as a headless set screw with compact 3/16" length for applications with limited clearance
• Easy installation and removal using standard 5/64" hex drive tools, reducing assembly time
• Enhanced grip and alignment from the cup tip design, minimizing component slippage

Professional Applications & Engineering Value

This 8-32 UNC set screw is engineered to address common industrial challenges such as loosening under vibration and exposure to corrosive conditions. The 18-8 Stainless Steel material provides excellent durability and resistance to rust, making it suitable for machinery, automotive, and electronic assemblies where reliability is critical. The Nylon Patch thread locker offers a permanent locking solution without requiring additional adhesives, simplifying maintenance while ensuring joint integrity across a wide temperature range. Its headless hex drive and coarse thread design allow for quick, tool-friendly installation in tight spaces, reducing labor costs and improving production efficiency in high-volume manufacturing environments.

Specification Summary & Compliance

This set screw features a Class 3A thread fit for high precision and consistent performance. It conforms to ASME B18.3 standards, ensuring dimensional accuracy and reliability. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible sourcing and use in global markets.