3/16 x 2 Mushroom Spike 316 SS (100)

increasing follow-up expansion should the hole increase in size as a result of a crack

12-24 x 3/8 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (9

1 7/32 x 6 Reduced Shank Drill Bit (1/2 Shank)

3/4-10 x 6 1/4 STRONG-BOLT® 2 Cracked and Uncracked Concrete Wedge Anchor Zinc Plated (10)

1/4-28 x 5 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (400) Cap Nuts Nickel Plated 3/16 x 2 Mushroom Spike1 4 28 x 5 1 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (400) . 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