Type: Fe6 /ULS6/ULS7..available with drawings and samples Raw material: 65Mn./ 0Si2Mn/Q235/45# Commodity: Double fasten washer Type : Fe6 /ULS6/ULS7.... all kinds available with drawings and samplesRaw material : 65Mn./ 0Si2Mn/Q235/45#Surface :black etc. Commodity:Spring washersType:from 3/4-1Raw material:65Mn, 60SizMn, 70#...Surface:Black, Zinc, Plain, HDG…we main supply as follows: Commodity: ...