Yu Xiang Metal And Machine Co.,Ltd was found in 1994 years,We are a manufacturer in China,our factory have produced washers bolts nuts and other fasteners many years.We have enough knowledge to produce many fasteners as your require.The price which i send to you ,will be the best in China,as to the delievery and quatity,you will find they are really very good also..The products:flat washers, spring washers ,square washers ,bolts nuts and other fasteners.Products with black finish, plated with bright (white/yellow/black) zinc, brass, nickel and chromium are made upen requestThe type: DIN USS GB KS and so on.Material : low carbon steel, stainless steel,brass, and so on