Simpson Strong-Tie mechanical anchors are designed to install easily and securely into a variety of base materials, including concrete, grouted and hollow CMU and brick. Specifiers and contractors trust Simpson Strong-Tie anchors for optimum performance under the most demanding structural applications. Zinc Nailon anchors are low-cost anchors for light-duty applications under static loads. Zinc Nailon™ 1/4 in. x 3/4 in. Pin-Drive Anchor (100-Qty) (Pack of 42000).