Coarse threads run approximately 2/3 up the shank to help draw the decking tightly to the substrate

8 x 1 1/4 Phillips Flat Particle Board Screw Plain & Lubed - Carton (8

9/16-12 x 1 Grade 5 Hex Cap Screw Plain Domestic USA (25)

9/16-12 x 4 Hex Cap Screw SS 316 (A4)

7/8-9 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (225)

1/2-20 x 1 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (375) 1/2-20 Grade 8 Hex Cap Screws Yellow Zinc Plated - Domestic USA Coarse threads run approximately 2/31 2 20 x 1 1 4 Grade 5 Hex Cap Screw Plain Domestic USA (375). 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