Made of heat-treated carbon steel and available in both zinc plated and mechanically galvanized finishes

7/8-14 x 5 Hex Cap Screw SS 18-8 (A2)

3/4-16 x 1 Hex Cap Screw SS 18-8 (A2)

1-14 x 4 1/2 Socket Cap Screw Alloy

10-32 x 6 Socket Cap Screw Alloy

3/4-10 x 4 1/2 Hex Cap Screw SS 316 (A4) 7/16-20 Hex Cap Screws 18-8 Stainless Steel Made of heat-treated carbon steel3 4 10 x 4 1 2 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.