DIN439 hex nut M5-M30plain, zp,H.D.G. :;CARBON STEEL ISO, DIN, ANSI, BS, UNI, JIS, AS, GB DIN439 hex nut1) Sizes: M6 to M54 2) Any standard available (DIN 934, BS, ANSI, JIS) 3) Yellow zinc, blue and white zinc, zinc plated and self-color and H.D.G 4) Material: Plain and medium steel