Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering M16 A325m Grade 8.8 DIN6914 DIN En14399 Grade10.9 High-Strength Hex Bolt with Nut Washer for Structural Bolting Carbon Steel Structure Heavy Hex Bolts, Blak Oxide Zinc Galvanized B18.10 3/4 Oval Egg Neck Bolts, Black Oxide 12.9 A325 DIN604 Flat Countersunk Head Nib Carriage Bolts and so on.