... DIN555, DIN439, UNI5587, DIN6915, DIN1587, DIN439, A194, A563, and ANSI B18.2.2Grades: 2, 5, 6, 8, A194 ... 2H, A194 4, and A563 DHSurface: plain, black, phosphate, zinc, hot dip galvanizing ... , dacromet, and TeflonPacking: standard exportCan produce according to standard as well ... Hex Nut with Phosphate, Hot Dip Galvanizing, and Teflon Surface