Also known as a hammer drive anchor a drive anchor is an anchor with a nail-shaped pin enclosed in a sleeve. Once the pin is struck the anchor expands into concrete brick or block. These anchors are best suited for light duty fastening. As the industrys most trusted fastener supplier, Midwest Fastener has earned a reputation for delivering a complete line of high-quality bulk and construction fasteners to meet consumer needs. Contractors and DIYers alike have come to depend on Midwest Fastener to provide them with the critical parts and fasteners necessary to ensure the success of their projects.