... bolt 1.materials:Carbon steel 2.size:M20X55 3.Standards:DIN933 4.grade:8.8 HDG din933 hex bolt1.Standards ... :DIN933 ANSI/ASME B18.2.1 GB57832.Diameter: M4 ... 1/4''-1'' 3.Length: 6-300 1/2''-8'' 4.Finish:natural color,black,ZB,ZBK,ZY,ZW ... customer requirements.5.Grade: grade2 grade5 class4.8 5.8 6.8 8.86.packing:25kg/carton,bulking,36carton/pallet 4 ...