Hex Nylock Nut (Hex nylon insert self locking nut) Quanzhou Tongxing Industry Co, , Ltd Base Info Material:Carbon SteelType:Round HeadHead Style:RoundStandard:DIN, GBSpecification:Size:M8-M100;Grade:8-12;Work temperature:-50c_120c Description Pre:Plate Heat Exchanger Gasket Next:Hose Fitting-1b243-20-20