... 1.Certificate:ISO9001 2.Material:stainless steel,carbon steel 3.Finish:glavanized 4.free sample, tetainling, sta flat washer grade 8 ... SAE fine in hardware manufacturer Material:stainless steel,iron,copperSurface Finish:nick plated,zinc plated,black platedPayment ... serviceSize:M3-M22MOQ: 100000 pcs flat washer grade 8 SAE fine in hardware manufacturer