S-91770A188 8-32 x 3/16" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with passivated 18-8 stainless steel construction for long-term reliability in harsh environments
• Superior load distribution thanks to the wide truss head design that reduces surface pressure and prevents material damage
• High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding industrial applications
• Reliable thread engagement through fully threaded UNC coarse threads with Class 2A fit ensuring consistent fastening performance
• Optimized drive efficiency with Phillips No. 2 drive style providing secure torque transmission and reduced cam-out risk
• Comprehensive compliance meeting ASME B18.6.3 standards while being RoHS 3 and REACH compliant for global market acceptance
• Versatile 3/16" length offering ideal fastening solutions for various material thicknesses in industrial assemblies

Professional Applications & Engineering Value

These 8-32 UNC rounded truss head Phillips screws deliver exceptional engineering value through their specialized design and material properties. The passivated 18-8 stainless steel construction provides superior corrosion resistance, making them ideal for applications exposed to moisture, chemicals, or outdoor elements where fastener integrity is critical. The unique wide truss head profile significantly increases bearing surface area, distributing clamping forces more effectively across softer materials or thin panels while preventing pull-through failures. With fully threaded coarse UNC threads and Class 2A thread fit, these screws ensure rapid installation and reliable holding power in various substrates, from metal fabrications to industrial equipment assemblies. The combination of 70,000 psi tensile strength and controlled hardness makes these fasteners suitable for vibration-resistant applications while maintaining sufficient ductility to prevent brittle fracture under dynamic loads.

Specification Summary & Compliance

This 8-32 UNC screw features precision Class 2A thread fit tolerances with coarse thread spacing for optimal engagement in various materials. Manufacturing complies with ASME B18.6.3 standards ensuring dimensional consistency and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations regarding chemical safety. The fully threaded design maintains consistent thread engagement throughout the 3/16" length, while the Phillips No. 2 drive provides standardized installation compatibility across industrial tooling systems.