S-95735A421 M8 x 20 mm JIS B 1189 Type 2 JIS High-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength rating and 150,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc-plated steel construction, extending service life in harsh industrial environments
• Enhanced stability and distribution with integrated flange design that eliminates the need for separate washers
• Optimized installation efficiency with external hex drive and coarse threading for faster assembly and reduced cross-threading risk
• Precise thread engagement with Class 6g tolerance ensuring consistent fit and vibration resistance in metric assemblies
• Full-thread design provides maximum grip length and uniform stress distribution along the entire fastener
• Regulatory compliance assurance meeting JIS B 1189 Type 2 standards while being RoHS 3 and REACH compliant

Professional Applications & Engineering Value

These M8 hex head screws deliver critical engineering solutions for heavy-duty industrial applications where failure is not an option. The Class 10.9 zinc-plated steel construction provides exceptional resistance to dynamic loads and environmental factors, making them ideal for machinery, automotive components, and structural assemblies. The flanged design distributes clamping force over a wider surface area, preventing surface damage and maintaining joint integrity under vibration. With coarse metric threading and external hex drive, installation is streamlined while maintaining the high torque requirements of industrial equipment. These fully threaded screws ensure maximum engagement in thick materials, while the Rockwell C32 hardness maintains thread form under repeated disassembly cycles.

Specification Summary & Compliance

This M8 x 1.25mm pitch fastener features Class 6g thread fit tolerance for precision mating with standard metric nuts. Manufacturing complies with JIS B 1189 Type 2 specifications, ensuring dimensional accuracy and performance consistency. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restriction and REACH (EC 1907/2006) requirements for chemical safety. With a standardized 20mm length and 17.5mm flange diameter, these screws provide reliable interchangeability in metric assembly systems.