Grade4.8/8.8/10.9/12.9 High Quality DIN931 DIN933 Hex Head Bolts And Nuts

Standard: DIN931/DIN933 Grade: 4.8/6.8/8.8/10.9/12.9 Material: Low carbon steel/medium carbon steel/alloy steel Size:M6-M45; 1/4“-3“ Finish: black/zinc plated/hot dip galvanized Mark: According to customer’s requirement