1-8 x 3 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (35)

7/8 x 18 Ship Auger Wood Bit

1/4 x 2 3/4 Slotted Hex Hi-Low Thread Concrete Screws Blue Ceramic Coated (1000)

City officials wanted to make sure that the sprinklers would stay up during an earthquake

3/4 x 8 1/2 Titen HD Concrete Anchor Zinc Plated (5)

5/16-24 x 3 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50) 7/16-20 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA 1-8 x 3 1/2 Grade5 16 24 x 3 1 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50) . 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