... ;black;zinc plated(Cr,3+);zinc plated(Cr,6+);hot dipped galvanized;dacromet;nickle plated;cadmium platedSizeM3-M48; ... blue zinc, and phosphatingGrade: 4.8 5.8 6.8 8.8 10.9 12.9Material: carbon steel ... 9.5. Inch standard: Grade2, Grade5, Grade8, B7.6. Grade of S.S.: A2-70, A4-70, ... 9. Surface: Plain, black finished, Zinc plated (Galv), Hot Dip Galvanized, Nickel, phosphate black, dacromet coating.10. ...