18-8 stainless steel offers good corrosion resistance and machines easily but will over time stain in coastal environments

3/4-10 x 9 Grade 8 Hex Cap Screw Yellow Zinc Plated

3/4-10 x 10 Grade 5 Hex Cap Screw Zinc Plated

1-14 x 5 1/2 Grade 5 Hex Cap Screw Zinc Plated

Typical hardness on diameters 1/4 to 2 1/2 inches is HRC 33-39

3/4-10 x 2 1/2 Hex Cap Screw SS 316 (A4) 1/2-13 Hex Cap Screws 18-8 Stainless Steel 18-8 stainless steel offers good3 4 10 x 2 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.