... .Finish.Zinc,Nickel plated,Black Oxide,HDG 4.SGS,ISO Nylon insert lock nut 1. Standard: DIN, ANSI,BSW, JSB ans ISO standard ... ,SS316 A4 etc), Brass or according require.3. Grade of Nylon insert lock nut : Metric standard: Grade 4.8, Grade6.8, Grade8.8 ... -6mmNylon insert lock nut Product pohot examples: If you have any question, please feel free to contact with us . tel: +86-13428766314 Nylon insert lock ...