M10 - A4 (T316) Stainless Steel Serrated Flange Nut - DIN 6923 A4 / T316 Stainless Steel is suitable for anywhere you would use T304 BUT has the added advantage of being suitable for marine solutions. The molybdenum increases the corrosion resistance to withstand attack from many industrial chemicals and solvents and of course chlorides. Thread Size : M10 dc (mm) : 21.8 m (mm) : 9.64 s (mm) : 15 e (mm) : 17.77