... , 6 Finish: natural, lpating Zinc, coating Specifications of Hex nylon lock nuts: 1.StandardASME B18.16.6, DIN985, DIN982,GB 889 ... , S20C,AISI4142,AISI4140, SCM435, 45# steel, stainless steel:sus201, sus303, sus304, sus316, sus410Brass:copper, bronze 4.GradeGrade4.6, Grade6, Grade 8 ...