5/16 x 7 Square Pan Gutter Screw Brown (10)

1/2-20 x 2 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

They are actually stronger than most metal and chemical anchors because the all plastic plug bonds through friction to concrete

1-8 x 4 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (40)

3/8-16 x 2 3/4 Grade 8 Hex Cap Screw Plain Domestic USA (400)

3/4-16 x 2 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) 5/8-18 Grade 8 Hex Cap Screws Yellow Zinc Plated - Domestic USA 5/16 x 7 Square Pan3 4 16 x 2 1 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) . 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