3/4 x 4 Titen HD Concrete Anchor Zinc Plated (10)

50 x 100 Flat Socket Cap Screw 12

The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener

9/16-12 x 2 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (25)

5/16-18 x 3 Grade 5 Hex Cap Screw Plain Domestic USA (500)

5/8-18 x 3 Grade 5 Hex Cap Screw Plain Domestic USA (25) 1-8 Socket Cap Screws Alloy 3/4 x 4 Titen HD5 8 18 x 3 Grade 5 Hex Cap Screw Plain 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 of 120,000