S-95735A121 M12 x 50 mm JIS B 1189 Type 2 JIS High-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in harsh industrial environments
• Superior load-bearing capacity thanks to Class 10.9 strength grade and 150,000 psi tensile strength for heavy-duty applications
• Enhanced stability and vibration resistance from the 25mm flange diameter, eliminating the need for separate washers
• Precise thread engagement with M12 x 1.25mm extra fine pitch and Class 6g thread fit for secure fastening in critical assemblies
• Optimized torque transmission through external hex drive and 17mm head width, facilitating easy installation with standard tools
• Reduced material stress with partially threaded design, concentrating strength where needed while minimizing weight
• Global compliance assurance meeting JIS B 1189 Type 2 standards and RoHS 3/REACH environmental regulations

Professional Applications & Engineering Value

This M12 hex head screw delivers critical engineering solutions for demanding industrial applications where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for machinery, automotive components, and structural assemblies exposed to environmental elements. The flanged design distributes clamping force over a wider surface area, preventing surface damage while providing superior resistance to loosening under dynamic loads. With its extra fine 1.25mm pitch and Class 10.9 strength rating, this fastener maintains precise alignment in high-stress connections, making it ideal for precision equipment, heavy machinery, and critical infrastructure where failure is not an option. The combination of partial threading and Rockwell C32 hardness ensures optimal performance in applications requiring both shear strength and fatigue resistance.

Specification Summary & Compliance

This metric hex head screw features precise M12 x 1.25mm extra fine threading with Class 6g thread fit tolerance ensuring consistent engagement. Manufacturing complies with JIS B 1189 Type 2 specifications for dimensional accuracy and performance standards. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental regulations. With a defined minimum thread length of 30mm on the 50mm overall length, the fastener provides optimal thread engagement while the Rockwell C32 hardness and 150,000 psi tensile strength verify its Class 10.9 performance rating for industrial applications.