S-91781A844 10-32 x 3 1/2" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable, long-lasting fastening
• Precise thread engagement with 10-32 UNF fine threads and Class 2A fit, ensuring secure connections in demanding applications
• Optimized flush mounting featuring a standard flat head profile with 82° countersink angle for seamless surface integration
• Enhanced installation control through slotted drive design, providing straightforward manual assembly
• Versatile partial threading allowing unthreaded shank sections for precise clamping and alignment in assemblies
• Full regulatory compliance meeting ASME B18.6.3 specifications and RoHS/REACH environmental standards

Professional Applications & Engineering Value

This 18-8 Stainless Steel Flat Head Screw delivers critical performance advantages for industrial applications where corrosion resistance and mechanical reliability are paramount. The combination of UNF fine threading and Class 2A thread fit ensures vibration-resistant fastening in machinery, electronic enclosures, and precision equipment. The passivated finish significantly enhances the natural corrosion resistance of stainless steel, making these slotted flat head screws ideal for marine, chemical processing, and outdoor applications. The partially threaded design with 3½" length provides optimal grip range while preventing thread damage during assembly. These engineering features address common failure points in industrial fastening, offering maintenance-free performance in demanding environments.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread tolerances for consistent fit and performance. The 10-32 UNF fine thread configuration ensures precise engagement while the 82° countersink angle provides standard flush mounting. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe use across various industries. Mechanical properties include 80,000 psi tensile strength and Rockwell B80 hardness for dependable performance in high-stress applications.