Features: 1) Standards: DIN1587, DIN6923, DIN985, DIN557 & DIN5622) Size: M2 to M24, 1/4 to 1"3) Material: low carbon steel, carbon steel 35#, stainless steel, brass4) Gr4.6, Gr8, Gr105) Surface: Plain, Black, Zinc Cr+3,Yellow Zinc Cr+6,H.D.G.,Dacromet,etc.6) Packing: bulk, box packing, Carton or Poly bag, Pallet