Spring Nuts for Unistrut Channel 1.Materials:Q235A 2.Diameter:M6~M12 3.Finish:Zinc,HDG,Etc Spring Nuts for Unistrut ChannelHigh quality and Best price1.Materials:Q235A2.Diameter:M6~M123.Surface Treatment :Zinc,Black Phosphate,Grey,Nickel,Etc4:Packing:Bulk or Small Box,According to customer requirement Spring Nuts for Unistrut Channel