S-98930A128 M8 x 45 mm ISO 8678 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance with integrated square neck design that locks securely into materials, preventing bolt spin during installation and use
• Exceptional corrosion resistance provided by zinc yellow-chromate plating, extending service life in demanding industrial environments
• High tensile strength rating of 110,000 psi and Class 8.8 classification ensures reliable performance in heavy-duty applications
• Optimized thread engagement with M8 coarse threading (1.25mm pitch) enables faster installation and superior vibration resistance
• Precision manufacturing to ISO 8678 standards guarantees consistent dimensional accuracy and reliable performance
• Enhanced durability with Rockwell C22 hardness rating maintains structural integrity under repeated stress and load conditions
• Versatile fully-threaded design allows for maximum adjustability and secure fastening across various material thicknesses

Professional Applications & Engineering Value

These M8 carriage bolts deliver critical engineering solutions where vibration resistance and anti-rotation performance are paramount. The square neck design mechanically locks into assembled materials, eliminating the need for additional locking mechanisms and reducing installation time. Manufactured from zinc yellow-chromate plated steel, these fasteners withstand harsh environmental conditions while maintaining their protective coating. The Class 8.8 strength rating combined with 110,000 psi tensile strength makes them ideal for structural applications in construction, heavy machinery, transportation equipment, and industrial assemblies where failure is not an option. The metric coarse threading ensures quick installation and reliable performance in wood, metal, and composite materials.

Specification Summary & Compliance

This carriage bolt features precision M8 x 1.25mm coarse threading with Class 6g thread fit tolerance for consistent engagement. The fastener meets ISO 8678 specifications for dimensional accuracy and performance requirements. With a 45mm length and 18mm head diameter, it provides optimal clamping capability. The Rockwell C22 hardness ensures durability, while the zinc yellow-chromate plating offers corrosion protection compliant with industry standards for industrial fasteners.