The Split Drive Anchor is a one-piece anchor with a split-type expansion mechanism on the working end

1/4 x 1 1/2 Nailon™ Anchor Mushroom Zinc Plated (100)

1/4 x 2 3/4 Phillips Flat Hi-Low Thread Concrete Screws Blue Ceramic Coated

7/16-20 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (25)

1 1/4-7 x 3 3/4 Socket Cap Screw Alloy

3/8-24 x 3 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (50) 3/4-16 Flat Socket Cap Screws Alloy The Split Drive Anchor is3 8 24 x 3 1 2 Grade 8 Hex Cap Screw Plain 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 diameters 1 4