Zinc Plated Steel Hammer Drive Pin AnchorsHammer Drive Pins for Masonry Applications Using a pre-drilled hole, they are installed with hand tools (typically a hammer)Drive the pin into the anchor body, expanding the anchor, to form a tight fitZinc plated steel adds a layer of corrosion resistance Used in lighter load applications, Hammer Drive Pins (or just drive pins) attach fixtures to solid concrete or certain types of concrete blocks. Using a pre-drilled hole, they are installed with hand tools, typically with a hammer strike, to drive the pin into the anchor body expanding the anchor to form a tight fit. The washer on the anchor retains the pin and guides it during the driving installation.Trade Names: Hammer Drive Anchors, Drive Pin Anchors, Hammer-Set Anchors, Nail Drive Anchors, Nail-On Anchors, Nail-On Drive Pins, Concrete Anchor Nails, Mushroom Head Anchors, Hammer Drive Hollow Wall Anchors Zinc Plated Steel Hammer Drive Pin Anchors Drive Pin Masonry Anchors Hammer Drive Pin (or just drive pin) attaches fixtures to solid concrete or certain types of concrete blocks. They are also sometimes referred to as mushroom head anchors, nail in anchors, or drive nail anchors. Installing a Drive Pin Anchor Drive Pin Anchors are installed into a pre-drilled hole. The anchor is placed through the material being fastened to the masonry material and into the hole in the concrete brick or block. The exposed pin or nail head is then struck with a hammer into the body of the anchor, which expands it and holds the fixture to the masonry material. Zinc Plated Steel CR+3 Zinc Plating to add a layer of corrosion resistance to the anchor, making them more durable and resistant to rust.