The 3/8" anchor solution approved for 3 ¼" concrete thickness: The Strong-Bolt 2 anchor can be installed in cracked concrete with a minimum thickness of 3 ¼"

9/32 x 12 High Speed Long Boy

00 x 340 Socket Cap Screw 12

7/16-20 x 3 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (350)

1/2-13 x 5 1/2 Hex Cap Screw SS 316 (A4)

3/8-24 x 2 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (100) 6" Aircraft Bits Cobalt - Wire Gauge The 3/8" anchor solution approved3 8 24 x 2 1 4 Grade 8 Hex Cap Screw Plain Domestic USA (100). 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