... -M100 3.Surface:Black,zinc 4.iso rohs approve hexagon bolt 1. Standard:DIN931/933, DIN558/601; DIN6914 ... . Grade of hexagon bolt:Metric standard: Grade4.6, Grade 4.8, Grade5.6, Grade 5.8, Grade6.8, Grade8.8, Grade10.9, ... -72mm, Inch size from 1/8"-2-1/2". 5. Length of hexagon bolt:0-3000mm or 0-10 ... Nickel, phosphate black, DACRO, etc. 7. Packing of hexagon bolt:General packing: 15-25Kg per Carbon or Bag, ...