... plated,Black Oxide,HDG 4.SGS,ISO Nylon insert lock nut 1. Standard: DIN, ANSI,BSW ... , JSB ans ISO standard or non-standard as request&design.2. Material:Carbon ... A2,SS316 A4 etc), Brass or according require.3. Grade of Nylon insert lock nut : Metric standard: ... Brass or as request.FinishPlain, Black, Galvanized with Zinc, HDGSizeM3-M64Thickness3.2mm-51mmPitch0.25mm-6mmNylon insert lock ...