Non-Standard Metal Parts manufacturer / supplier in China, offering DIN6923 Metric 304 Stainless Steel A2-70 Hex Flange Lock Nut Grade 10 Zinc Plated with Serrated Teeth Locking Nut, DIN6923 Carbon steel Hex Flange Nuts Hexagon Head Weld Self Locking Nut with Knurled Color Zinc Plated, Customized DIN6923 Olive Green Galvanized Hex Flange Nuts Hexagon Head Weld Self Locking Nut with Knurled and so on.