S-91781A632 3/8"-16 x 2" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments
• High-strength performance with 80,000 psi tensile strength and Rockwell B80 hardness for reliable, heavy-duty fastening
• Excellent thread engagement with fully threaded UNC coarse threads and Class 2A fit for secure installations
• Flush mounting capability with standard 82° countersink angle and flat head design for smooth surface finishes
• Wide compatibility with standard slotted drive tools for easy installation and removal
• Regulatory compliance meeting ASME B18.6.3 standards and RoHS 3/REACH environmental requirements
• Dimensional precision with consistent 2" length and 3/8"-16 thread size for uniform performance across applications

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw delivers exceptional engineering value in demanding industrial settings where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel construction combined with passivated finish creates a robust barrier against moisture, chemicals, and environmental degradation, significantly extending service life in manufacturing equipment, marine hardware, and outdoor structures. The fully threaded coarse UNC pattern with Class 2A fit ensures maximum thread contact and vibration resistance, preventing loosening in high-stress applications. The flat head design with 82° countersink allows for flush mounting in machinery, automotive components, and structural assemblies where protruding fasteners are unacceptable. With 80,000 psi tensile strength, these slotted drive screws maintain clamping force under extreme loads, making them ideal for critical fastening points in industrial machinery, construction frameworks, and transportation equipment.

Specification Summary & Compliance

This flat head screw features precise Class 2A thread fit with 3/8"-16 UNC coarse threading and maintains dimensional accuracy per ASME B18.6.3 specifications. The manufacturing process ensures consistent 2" length and proper 82° countersink angle for reliable performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and material safety standards, making these screws suitable for regulated industries and international projects requiring certified components.