Nut

Diameter.: 4MM--24MM (3/16"---5/8")
　　Grade: 6/8/10/12(ANSI 2/5)
　　Surface: Zinc Plated, BLACK, PLAIN, YZP, HDG
　　Standard: DIN, ANSI, UNI, JIS, ISO
　　incl.DIN1587 DIN986 DIN917-1987
　　Packing: bulk or small box packed in cartons, then in pallets.