This gives 316 stainless steel a higher degree of corrosion resistance and superior strength at raised temperatures

1 3/8 Flat Washer SS 18-8 (A2)

1-8 x 3 3/4 Socket Cap Screw Alloy

6 x 3/4 Phillips Bugle Decking Screws Yellow Zinc Plated - Carton (15

1/2-13 x 9 Grade 5 Hex Cap Screw Zinc Plated

3/4-10 x 1 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) Phillips Flat Machine Screws Type F Zinc Plated This gives 316 stainless steel3 4 10 x 1 1 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) . Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum