5/16-18 x 3 Hex Cap Screw SS 316 (A4)

5/16-18 x 3 Hex Cap Screw SS 316 (A4) . 316 series stainless steel differs from 18-8 by its molybdenum content (2-3%) and a higher nickel content (10-14%). 316 stainless steel has greater corrosion resistance than 18-8 as well as superior strength at high temperatures.