Use with stable woods and wood substitutes when screw heads need to be hidden

providing much greater holding power than other self drilling anchors that are just a small screw in a larger screw

3 up the shank to tightly draw the decking to the substrate

1/4-28 x 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (550)

3/4-16 x 4 Hex Cap Screw SS 18-8 (A2)

7/16-20 x 2 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (350) 1 1/8-12 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA Use with stable woods and7 16 20 x 2 1 4 Grade 8 Hex Cap Screw Plain Domestic USA (350). 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