Zhongbao Fastener focuses on high-quality fasteners, mainly producing fastener bolt, fastener screw, fastener washer, fastener nut, fastener threaded rod, etc. Hexagon Flange Bolt need to cooperate with the nut, for tightening connecting the two through-hole parts. It consist of the Hexagon head, the flange plate (hex washer and hex fixed below one) and the flange plate (externally threaded cylinder). Original of Place Handan,China Material Carbon Steel, Stainless Steel 304, Stainless Steel316 Production Standard DIN, ISO, and non-standard Surface color Black/grey/silver Packing Method 25kg per carton, 36 cartons packed in a pallet , or 100/200/500/1000PCS Per Small Box +carton box or according to your demands. Purchasing Notice Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us.