5/8-18 x 1 3/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (235)

1/4-20 x 6 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (350)

10 x 3 1/2 Star Flat Decking Screws w/ NIBS Yellow Zinc Plated T17 - Carton (1000)

Wings ream hole in board preventing "jacking action"

hardness will range from HRC 31-39

7/8-9 x 6 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (10) 18" Ship Augers 5/8-18 x 1 3/4 L97 8 9 x 6 1 2 Grade 8 Hex Cap Screw Plain Domestic USA (10). 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