Class 12.9 Metric Hex Bolts are ultra high-strength fasteners engineered for high-stress applications where maximum tensile performance is required. Manufactured from hardened alloy steel, these bolts are significantly stronger than standard grades and are typically used in heavy machinery, automotive, and structural assemblies.
Class 12.9 bolts are only available in coarse thread and are less commonly stocked than lower-grade fasteners, making them a specialized solution for demanding environments. Due to their strength and limited availability, they are often chosen when performance and reliability are paramount.
These bolts are not coated for corrosion resistance and are not recommended for use in continuously damp or wet environments.
