S-91770A829 10-32 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 long-term reliability in harsh environments
• Enhanced load distribution through wide rounded truss head design that reduces surface pressure and prevents material damage
• Maximum holding power with fully threaded shank ensuring consistent engagement across the entire fastener length
• Precise thread engagement with Class 2A fine UNF threads providing secure, vibration-resistant connections
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Efficient installation with No. 2 Phillips drive enabling quick, secure driving without cam-out issues
• Regulatory compliance meeting ASME B18.6.3 standards and environmental regulations for global industrial use

Professional Applications & Engineering Value

This 10-32 UNF fine thread screw with its distinctive rounded truss head design addresses critical engineering challenges in industrial assembly. The passivated 18-8 stainless steel construction provides exceptional corrosion resistance, making it ideal for applications exposed to moisture, chemicals, or outdoor elements. The wide truss head profile distributes clamping force over a larger surface area, preventing damage to softer materials while maintaining secure fastening. The fine thread configuration offers superior vibration resistance compared to coarse threads, ensuring maintained tension in dynamic environments. These fully threaded screws deliver consistent engagement depth, eliminating the need for precise length calculations in variable material thicknesses. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in high-stress applications across electronics, machinery, automotive, and aerospace industries where precision fastening and durability are paramount.

Specification Summary & Compliance

This precision-engineered fastener features 10-32 UNF fine threads with Class 2A thread fit tolerance for consistent, reliable engagement. Manufacturing complies with ASME B18.6.3 specifications ensuring dimensional accuracy and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations (updated 06/14/2023 235 SVHC) for chemical safety. The right-hand thread direction and No. 2 Phillips drive size provide standardized installation compatibility across industrial applications.