Flange Hex Nut, Grade0.9 Carbon Steel Black Oxide Finished Hex Flange M20 1
M20 Flange Hex Nut, Grade 10.9 Carbon Steel Black Oxide Finished Hex Flange Nut for Machinery. Material: A flange hex nut is made of carbon steel, a black oxide finish that has the function of rust prevention, corrosion resistance, high strength, durable.