S-91770A194 8-32 x 1/2" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• Enhanced load distribution thanks to the wide rounded truss head design that reduces surface pressure and prevents material damage
• High tensile strength of 70,000 psi ensures reliable performance under substantial mechanical stress and vibration
• Excellent drive engagement with Phillips No. 2 drive for secure installation and reduced cam-out risk during assembly
• Optimal thread engagement through fully threaded UNC coarse pattern and Class 2A fit for faster installation and consistent clamping force
• Industry-standard compliance with ASME B18.6.3 specifications ensuring interchangeability and quality assurance
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

These 8-32 UNC rounded truss head screws deliver exceptional engineering value in industrial fastening applications where vibration resistance, corrosion protection, and consistent clamping force are critical. The passivated 18-8 stainless steel construction provides superior corrosion resistance for demanding environments including marine, food processing, and outdoor equipment. The unique truss head design offers a larger bearing surface than standard rounded heads, distributing load more effectively across softer materials and reducing the risk of surface damage. Combined with the coarse UNC threading and full threading along the entire 1/2" length, these screws provide rapid installation and reliable holding power in materials where fine threads might strip or fail. The Phillips drive system ensures compatibility with standard industrial tools while maintaining secure drive engagement during high-torque applications.

Specification Summary & Compliance

This fastener maintains precise Class 2A thread fit tolerances according to UNC standards, ensuring consistent performance and interchangeability. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The screw meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for environmentally conscious industrial applications worldwide.