S-91770A392 8-32 x 2 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, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Optimized drive engagement through Phillips No. 2 drive design ensuring secure installation and reduced cam-out risk
• Enhanced load distribution from wide truss head design that minimizes surface pressure and prevents material damage
• Precision threading performance with Class 2A UNC coarse threads providing excellent assembly speed and vibration resistance
• Full-threaded coverage along the 2-1/2" length ensures maximum grip strength and uniform stress distribution
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 8-32 UNC screws deliver critical performance advantages where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for marine equipment, food processing machinery, and outdoor structural assemblies. The combination of coarse UNC threading and Class 2A thread fit ensures rapid installation in various materials while maintaining consistent clamping force. The wide truss head design offers superior load-bearing surface contact, preventing pull-through in softer materials and distributing stress effectively across joined components. These fully threaded screws maintain their 70,000 psi tensile strength across the entire fastener length, providing reliable performance in vibration-prone environments and heavy-duty mechanical systems.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse threading specifications. Complies with ASME B18.6.3 manufacturing standards for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety. The 2-1/2" length and fully threaded design ensure consistent performance across the fastener's entire engagement area.