S-91054A479 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced wear resistance and reduced friction from TiCN coating, extending service life in high-cycle applications
• Exceptional clamping force with 70,000 psi tensile strength for reliable, vibration-resistant assemblies
• Precise component alignment thanks to the accurately machined 3/16" shoulder diameter with tight tolerance control
• Easy installation and high torque transmission via the hex socket drive, preventing cam-out and tool slippage
• Consistent thread engagement ensured by UNC coarse threads with Class 2A fit for rapid assembly
• Compliance with global environmental standards including RoHS 3 and REACH for unrestricted international sourcing

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw is engineered to solve critical alignment and pivot point challenges in precision assemblies. The 18-8 stainless steel core provides excellent resistance to oxidation and chemical exposure, while the TiCN coating significantly reduces galling and wear in dynamic applications such as rotating machinery, automation guides, and precision instruments. The 3/16" shoulder length with precise diameter tolerance acts as a reliable datum for locating gears, bearings, or linkages, eliminating misalignment and reducing assembly time. Its coarse UNC thread and Class 2A fit ensure quick, secure fastening even in high-vibration environments, making it a trusted component for industrial equipment manufacturers seeking durability and repeatable performance.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. The shoulder diameter is manufactured to a tight tolerance of -0.002" to 0", and the shoulder length is controlled within 0" to 0.003" for precise assembly. Material properties include a Rockwell B55 hardness and 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for global industrial use.