The Power-Stud+ SD1 is a fully threaded, torque-controlled wedge expansion anchor designed for concrete applications. Suitable base materials are normal-weight and sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry. This anchor has various DOT approvals, including a Caltrans listing for "Stud Mechanical Expansion Anchors" building code approved. The anchors come in a pack of 50, so you'll have plenty for your next project.