S-98930A116 M8 x 20 mm ISO 8678 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc yellow-chromate plating that protects against rust in harsh industrial environments
• Prevents rotation during installation thanks to the integrated square neck design that locks securely into materials
• High tensile strength performance with Class 8.8 rating (110,000 psi) for demanding structural applications
• Reliable thread engagement through fully threaded M8 coarse pattern (1.25mm pitch) for faster assembly
• Optimized hardness characteristics with Rockwell C22 rating that maintains integrity under load
• Secure fastening in soft materials with wide rounded carriage head that distributes pressure effectively
• International standard compliance meeting ISO 8678 specifications for global project compatibility

Professional Applications & Engineering Value

These M8 carriage bolts deliver exceptional engineering value in applications where vibration resistance and corrosion protection are critical. The zinc yellow-chromate plated steel construction provides superior defense against environmental degradation, making these fasteners ideal for outdoor structures, agricultural equipment, and marine applications. The square neck design fundamentally solves the common installation problem of bolt rotation in wood and soft materials, ensuring secure positioning without additional tools. With Class 8.8 strength rating and fully threaded metric coarse pattern, these carriage bolts maintain structural integrity in high-stress connections while facilitating quick assembly in production environments. The combination of 18mm wide head diameter and Rockwell C22 hardness creates a reliable fastening solution that withstands both static and dynamic loads in industrial machinery and construction frameworks.

Specification Summary & Compliance

This metric carriage bolt features precise M8 x 1.25mm coarse threading with Class 6g thread fit tolerance for consistent engagement. Manufacturing complies with ISO 8678 specifications for dimensional accuracy and performance standards. The 20mm length and 3mm square neck provide standardized dimensions for predictable installation. The zinc yellow-chromate plating meets industry corrosion protection requirements while the Class 8.8 strength classification (equivalent to 110,000 psi tensile strength) ensures mechanical reliability in accordance with international fastener standards.