Designed for use with 316 stainless steel screws

1/2-13 x 4 1/2 Hex Cap Screw SS 316 (A4)

3/8-16 x 1 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (100)

usually where one part slides over another part or one part is mounted on another

1/2-13 x 1 Grade 8 Hex Cap Screw Plain Domestic USA (400)

5/16-18 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (300) Spike Impact Anchors Zinc Plated Designed for use with 3165 16 18 x 4 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (300) . 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