... are manufacturer. specification:M3 ,M4 ,M5, M6, M8 ,M10 ,M12, Pipe FittingsWe can offer you all kinds of Nuts.We are ... reach international standard. Our products are widely used in furniture, car, ship, electron and other fittings of industrial products. types: flat ... ,5/16,3/8 . material: steel, stainless steel, brass,aluminium. Pipe Fittings