DIN557 square nut Size:M5--M27 Grade:4,6,8 Colour: ZP,YZP,BLACK,HDG,Dacromet DIN557 square nut1.Size:M5--M27 2.Grade:4,6,83.Colour: ZP,YZP,BLACK,HDG,Dacromet4.Material:Carbon steel5.Package:Small Boxed, Bulk Packed,Then pallets6.Delivery:About 30 days after order placed