S-95735A441 M8 x 40 mm JIS B 1189 Type 2 JIS High-Strength Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity - Class 10.9 strength grade with 150,000 psi tensile strength ensures reliable performance in high-stress applications
• Superior Corrosion Resistance - Zinc-plated steel construction provides excellent protection against rust and environmental degradation
• Enhanced Stability & Distribution - Integrated flange design eliminates the need for separate washers and distributes load more effectively
• Optimized Thread Engagement - M8 x 1.25mm coarse pitch threading offers faster assembly and reduced cross-threading risk
• Precision Manufacturing - Class 6g thread fit ensures consistent, reliable mating with compatible nuts and threaded components
• Robust Material Properties - Rockwell C32 hardness maintains structural integrity under repeated stress and vibration
• Simplified Installation - External hex drive with 12mm head width allows for standard wrenching tools and secure torque application

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these Class 10.9 hex head screws deliver exceptional performance where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides reliable corrosion protection in manufacturing facilities, outdoor equipment, and machinery applications. The flanged design eliminates washer requirements while providing superior clamping force distribution, making them ideal for automotive assemblies, construction equipment, and heavy machinery where high tensile strength and durability are critical. The M8 coarse thread pitch ensures rapid installation in production lines while maintaining secure fastening in high-vibration settings. These partially threaded bolts offer precise unthreaded shank sections for accurate positioning in structural applications requiring shear strength and alignment stability.

Specification Summary & Compliance

This metric hex head screw features precise M8 x 1.25mm coarse threading with Class 6g thread fit tolerance ensuring compatibility with standard metric components. Manufactured to JIS B 1189 Type 2 specifications with 40mm overall length and 22mm minimum thread length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring certified material safety standards.