DIN standard Fastener Manufacturer of stainless steel flanges , tubes,Fine Fasteners & Spares and all types of steel products Large Hex Head Bolts For Steel Structure DIN6914-6916 Grade:10.9Surface: Dacromet,Galvanize,NigrescenceRange of application: Fan bolts, Fanblade bolts, Tower bolts, Basic bolts High Strength Large Hex Head Bolts For Steel Structure DIN6914-6916