... steel hot forged nuts: material:carbon 45# steel thred: 5/8-11 and 3/4-10 ASTM Standard: according to custome square steel hot ... forged nuts1)Material: stainless steel, alloy steel, grey iron, ductile iron, brass, ... , nickel-plated, chrome-plated, hot-galvanized, sandblasting, painting, powder-coating.7) Accuracy±0.01mm square steel hot forged nuts