... .Size:M3-M64 3.Finish.Zinc,Nickel plated,Black Oxide,HDG 4.SGS,ISO Nylon insert lock nut 1. Standard: DIN, ANSI ... ,SS316 A4 etc), Brass or according require.3. Grade of Nylon insert lock nut : Metric standard: Grade 4.8, Grade6.8 ... steel series,carbon steel, Brass or as request.FinishPlain, Black, Galvanized with Zinc, HDGSizeM3-M64Thickness3.2mm-51mmPitch0.25mm-6mmNylon insert lock nut ...