The CTP Concrete Patch Tie is a stainless steel, helical-shaped anchor that provides a non-corrosive mechanical connection between damaged concrete and patching material. The Concrete Patch Tie is 8-mm in diameter and manufactured of type 304 stainless steel. It is available in 3-inch lengths. The thread pitch is 0.79 threads per inch, and cross-sectional area is 0016 square inches. Typical yield is 108,000 psi and tensile of 128,000 psi. The minimum embedment is 1-3/4-inch in the concrete sub-strata, which provides a 1-1/4-inch embedment for the patching material.