Rawl Anchor Bolts Rawl Anchor Bolts Rawl anchor bolts are used primarily to install structures to concrete, brick, block, and stone. Rawl Anchor Bolts are quick and simple to use through bolts, drop-in anchors with internal thread, Safety Plus anchors for highest loads, and cutting-edge concrete screw bolts. Whether you need to anchor a road sign to a concrete block or fasten a steel "I" beam into precast concrete, Rawl has an anchor bolt to get the job done. Rawl Anchor bolts are designed to attach structural elements to concrete.