S-90251A175 8-32 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 industrial environments and outdoor applications.
• Reliable, vibration-resistant locking provided by the Nylon Patch thread locker, maintaining secure fastening from -50° to 250° F.
• High-strength and durability ensured by Rockwell B80 hardness, reducing the risk of stripping or deformation under load.
• Precise, tight-fitting threads with Class 3A fit for minimal backlash and improved assembly accuracy in demanding applications.
• Easy installation and removal using a standard 5/64" hex key, compatible with common tools for efficient maintenance.
• Secure grip on shafts and components thanks to the cup tip design, which minimizes surface damage while providing excellent holding power.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.

Professional Applications & Engineering Value

This 8-32 UNC set screw is engineered to address common challenges in precision assemblies, such as loosening under vibration and corrosion in aggressive settings. Made from 316 stainless steel, it offers exceptional resistance to chemicals and moisture, making it suitable for marine, chemical processing, and food industry equipment. The Nylon Patch thread locker provides consistent locking force without requiring additional adhesives, simplifying inventory and assembly processes. With a Class 3A thread fit and coarse thread spacing, it ensures quick installation and reliable performance in high-stress applications, from machinery shafts to electronic enclosures. The headless, hex drive design allows for flush mounting in confined spaces, enhancing both safety and aesthetics in professional engineering projects.

Specification Summary & Compliance

This set screw features a Class 3A thread fit per UNC standards, ensuring tight tolerances for precision fastening. It complies with ASME B18.3 specifications for dimensional accuracy and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer products without hazardous substances.