S-90337A318 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Enhanced durability and load capacity with 70,000 psi tensile strength and Rockwell B55 hardness for reliable long-term performance
• Precise component alignment enabled by the accurately machined 3/16" shoulder diameter with tight tolerance control
• Secure and efficient installation using the hex socket drive that provides high torque transmission in confined spaces
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening in industrial assemblies
• Low-profile socket head design that minimizes protrusion while maintaining strong drive performance
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This 8-32 UNC shoulder screw delivers critical engineering value in applications requiring precise rotational or linear motion control. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to oxidation and chemical exposure, solving corrosion-related failure points in manufacturing equipment, automation systems, and precision instruments. The 3/16" shoulder length with precise diameter tolerance acts as an accurate pivot or spacer, eliminating misalignment issues in assemblies involving gears, bearings, or linkages. The hex socket drive allows for high-torque installation in space-constrained applications while the Class 2A thread fit ensures consistent clamping force without cross-threading risks. These features make it particularly valuable for industrial machinery, robotic assemblies, and precision manufacturing equipment where reliability and dimensional accuracy are paramount.

Specification Summary & Compliance

This precision shoulder screw features 8-32 UNC coarse threads with Class 2A thread fit for consistent engagement. The shoulder diameter maintains tight tolerance of -0.001" to 0" while shoulder length tolerance is controlled within 0" to 0.002". Manufactured from 18-8 stainless steel with passivated finish, it delivers 70,000 psi tensile strength and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for industrial fasteners.