S-91771A846 10-32 x 4" ASME B18.6.3 Stainless Steel Phillips Flat Head 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 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precise thread engagement through Class 2A thread fit and UNF fine threading, ensuring secure fastening in critical applications
• Optimized flush mounting with standard flat head profile and 82° countersink angle for seamless surface integration
• Efficient installation enabled by Phillips No. 2 drive design, reducing tool slippage and assembly time
• Partial threading versatility allowing unthreaded shank sections for precise clamping and alignment control
• Full regulatory compliance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 10-32 UNF flat head screws deliver critical engineering solutions 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 industrial applications. The partially threaded design combined with UNF fine threading ensures superior vibration resistance and precise clamping force distribution in assemblies requiring repeated disassembly. With Phillips No. 2 drive compatibility, installation efficiency is maximized while maintaining the sleek profile of flat head screws for applications where protruding fastener heads are unacceptable.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerance for consistent threading performance. The 10-32 UNF thread configuration with fine thread spacing ensures secure fastening in various materials. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming adherence to international substance restriction requirements for industrial components.