... 4, 6 Finish: natural, lpating Zinc, coating Specifications of Hex nylon lock nuts: 1.StandardASME B18.16.6, DIN985, DIN982,GB ... , sus316, sus410Brass:copper, bronze 4.GradeGrade4.6, Grade6, Grade 8, Grade 105.Surface treatmentblack oxide, zinc plating(white, yellow, black ... need. And can offer with salt spray checking report.8.Special reportfree PPAP or FMEA paper documents for automobiles industry ...