S-91979A418 8-32 x 3/4" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in demanding applications
• Enhanced installation control through 5/64" hex drive design allowing secure torque application without head interference
• Maximum component grip with cup point tip that bites into shafts and collars to prevent rotational slippage
• Pressure equalization capability via 0.042" vent diameter preventing air or fluid lock during installation
• Industry-standard compatibility with UNC coarse threads and right-hand direction for broad interchangeability
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global manufacturing applications

Professional Applications & Engineering Value

This 8-32 UNC set screw delivers critical engineering solutions for industrial assembly challenges where space constraints and corrosion resistance are paramount. The 18-8 stainless steel composition provides excellent durability against oxidation and chemical exposure, while the headless design with hex drive enables installation in confined areas where traditional headed fasteners cannot operate. The cup point tip creates permanent indentation in mating components, delivering superior resistance to rotational forces in pulley systems, gear assemblies, and shaft collars. The integrated vented feature prevents hydraulic lock during precision positioning applications, making these industrial set screws ideal for machinery manufacturing, automotive components, and precision instrument assembly where reliability cannot be compromised.

Specification Summary & Compliance

This fastener maintains Class 3A thread fit per UNC standards with 8-32 thread size and coarse spacing, ensuring precision tolerance for critical assemblies. The 3/4" length and 0.164" thread diameter provide consistent dimensional accuracy across production runs. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety for global supply chain integration.