S-91781A710 1/2"-13 x 3/4" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for heavy-duty applications
• Precision thread engagement with Class 2A thread fit ensuring reliable fastening and vibration resistance
• Optimized head design featuring undercut flat head profile for flush mounting and reduced stress concentration
• Industry-standard compliance meeting ASME B18.6.3 specifications for dimensional accuracy and performance reliability
• Environmental responsibility through RoHS 3 and REACH compliance, ensuring safe usage in regulated industries
• Versatile coarse threading with 1/2"-13 UNC pattern providing quick installation and superior holding power

Professional Applications & Engineering Value

These 1/2"-13 UNC flat head screws deliver critical engineering solutions where flush mounting and high-strength fastening are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional resistance to corrosion and chemical exposure, making them ideal for marine equipment, food processing machinery, and outdoor industrial applications. The undercut flat head design minimizes protrusion while distributing clamping force efficiently, preventing surface damage in precision assemblies. With fully threaded construction and coarse thread spacing, these screws offer rapid installation and superior pull-out resistance in both metal and composite materials, reducing assembly time while maintaining structural integrity under dynamic loads.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards, these flat head screws feature Class 2A thread fit tolerances for consistent engagement and reliable performance. The 1/2"-13 UNC coarse thread pattern ensures compatibility with standard industrial components. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees these fasteners meet the latest international safety and sustainability requirements for industrial usage.