S-91771A294 12-24 x 3/4" 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 delivering 80,000 psi tensile strength for heavy-duty applications
• Precise Class 2A thread fit ensures reliable engagement and vibration resistance in critical assemblies
• Optimized flush mounting with standard 82° countersink angle for seamless surface integration
• Enhanced installation efficiency through Phillips No. 3 drive compatibility with standard tools
• Full-threaded design provides maximum grip length and load distribution across the entire fastener
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for global applications

Professional Applications & Engineering Value

These 12-24 UNC flat head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against chemical exposure and environmental degradation, while the Rockwell B80 hardness ensures maintained thread integrity under repeated stress cycles. The combination of coarse UNC threading and Class 2A fit enables rapid installation in sheet metal, machinery frames, and equipment housings where vibration resistance is essential. The 82° countersink angle creates flush surface finishes in automotive, aerospace, and electronic enclosures, preventing snagging while maintaining aesthetic requirements. These fully threaded screws distribute clamping force evenly, making them ideal for applications requiring consistent pressure across joined components.

Specification Summary & Compliance

Manufactured to ASME B18.6.3 specifications with precise Class 2A thread fit tolerances ensuring consistent performance. The 12-24 UNC coarse thread profile provides optimal engagement in various materials while the 3/4" length offers versatile application coverage. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material traceability. Mechanical properties include 80,000 psi tensile strength and Rockwell B80 hardness for reliable performance in structural fastening applications.