S-91802A190 8-32 x 1/4" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• Excellent driving efficiency provided by Phillips No. 2 drive design, reducing cam-out and tool slippage during installation
• Reliable thread engagement with UNC coarse threading and Class 2A fit, ensuring consistent fastening performance
• Optimal flush mounting achieved through undercut oval head design with 82° countersink angle for seamless surface integration
• High mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for demanding applications
• Full threading coverage across the entire 1/4" length for maximum grip and load distribution
• Regulatory compliance meeting ASME B18.6.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These passivated 18-8 stainless steel flat head screws provide critical solutions for industrial applications where corrosion resistance and reliable fastening are paramount. The oval head design with undercut profile and 82° countersink angle ensures flush mounting in precision assemblies, eliminating protrusions that could interfere with moving components. The UNC coarse thread pattern combined with Class 2A thread fit offers superior engagement in various materials, reducing the risk of cross-threading while maintaining consistent clamping force. The Phillips No. 2 drive system delivers efficient installation with common tools, making these fully threaded screws ideal for electronics enclosures, machinery panels, and outdoor equipment where environmental exposure demands exceptional durability and long-term performance.

Specification Summary & Compliance

This 8-32 x 1/4" flat head screw features precision UNC coarse threading with Class 2A thread fit for consistent dimensional accuracy. Manufacturing complies with ASME B18.6.3 specifications for mechanical fasteners, ensuring reliable performance in industrial applications. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for global industrial markets requiring environmental responsibility.