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

3/8-16 x 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (1100)

the SNAPSKRU® anchor opens with an audible "pop

1/2-20 x 2 1/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

9/16-18 x 2 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (150) 1/2-13 Socket Set Screws Cup Point Alloy This gives 316 stainless steel9 16 18 x 2 3 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (150) . 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