S-92991A194 8-32 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass material, ideal for harsh industrial environments
• Exceptional thread engagement with Class 3A fit ensuring precise, vibration-resistant fastening
• Easy installation and removal with 5/64" hex drive providing reliable torque transmission
• Enhanced holding power from cup tip design that creates secure positioning in mating parts
• Long-term reliability with Rockwell B55 hardness balancing strength and durability
• Wide compatibility with 8-32 UNC coarse threads meeting standard industrial requirements
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 8-32 UNC brass set screw delivers exceptional performance in demanding industrial applications where corrosion resistance and precision threading are critical. The Class 3A thread fit provides superior engagement that resists loosening under vibration, while the headless design with cup tip ensures secure positioning in pulleys, gears, and collars. Made from durable brass material, it offers excellent conductivity and non-magnetic properties, making it ideal for electrical components and marine environments. The 5/64" hex drive allows for easy installation in confined spaces, and the Rockwell B55 hardness maintains thread integrity through repeated adjustments. These industrial set screws solve common fastening challenges in machinery assembly, automotive components, and precision equipment where reliability and compliance with ASME B18.3 standards are essential.

Specification Summary & Compliance

This precision fastener features 8-32 UNC coarse threads with Class 3A thread fit for exceptional dimensional accuracy and tight tolerances. The 1/2" length and 0.164" thread diameter provide consistent performance across applications. Manufacturing complies with ASME B18.3 specifications for set screws, ensuring interchangeability and reliability. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. The right-hand thread direction and coarse thread spacing follow industry standards for broad compatibility with existing components and tooling.