We can supply high quality Rivet nuts,Nylon lock nuts,Welded nuts,Flange nuts,etc.Welcome to contact us. Hex flange nutsHEX NUTSbrass hex nuts/bronze hex insertStandard:DIN,ANSI/ASME,BS,GB,JISMaterial:Carbon steel,Alloy and Stainless steelSize:M6-M20,1/4"-3/4"Finish:Plain,Black,Zinc plated,H.D.G,Nickel Hex flange nuts