hex head bolt 1.Standard:DIN, ANSI/ASME, BS, AS 2.hex bolt Size: M8-M100 3.Surface:Black,zinc,hdg,oxide 4.iso rohs approve hex head bolt 1 ... . Standard:DIN931/933, DIN558/601; DIN6914, DIN960/961, ANSI B18.2.1 ... Dip Galvanized, Nickel, phosphate black, DACRO, etc. 7. Packing of hex head bolt:General packing: 15-25Kg per Carbon or Bag, approx 36 ...