Heavy-Duty M12 to M20 Industrial Bolt and Nut Collection

Heavy-Duty M12 to M20 Industrial Bolt and Nut Collection. Wide Grade Range: Available in 3.6, 4.8, 6.8, 8.8, 10.9, 12.9, A2-70, A4-70, A4-80. Multiple Standards: Complies with ANSI/ASME B18.2.1, DIN931/933/960/961, GB1228, GB30, GB5781-5786. Flexible Customization: Supports customization from samples, designs, full, minor, and flexible options. Diverse Materials: Made from Carbon Steel, Alloy Steel, Stainless Steel, Brass, Copper, etc. Various Surface Treatments: Options include Plain, Galvanized, HDG, Nickel Plated, Dacroment, etc. Free Sample Offer: Free samples provided, excluding courier fees. Strict Quality Control: Every process checked by quality inspection department with factory visits. Fast Delivery: General delivery time is 15 to 45 days, depending on quantity.