Hexagon Head Bolts: DIN933,DIN931 1) Standard: GB,ISO,ANSI DIN,BSW,JIS 2) Materials:Carbon steel 3)Dimension:M3-M24 4)Length: 8mm-300mm 5)Grade: 4.8,6.8,8.8,10.9,12.9 6)Thread: full thread and non-full thread 7)Color:yellow zinc,white zinc,black oxide,plain 8) Any specific fasteners can be provided according to the customers requirements