9/16-12 L9 Hex Nut Alloy Cadmium Yellow and Wax Coated Domestic USA (800)

#1 square drive trim head

9/16-12 x 2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (300)

1 1/4 x 6 Reduced Shank Drill Bit (1/2 Shank)

wallboard and other hollow base materials

1/2-13 x 3 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (150) Square Trim-Head Wood Decking Screws 316 Stainless Steel 9/16-12 L9 Hex Nut Alloy1 2 13 x 3 1 2 Grade 8 Hex Cap Screw Plain Domestic USA (150). Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1 4