Hillman 1/2 in. D X 4-1/2 in. L Steel Round Head Wedge Anchor 10 pk

The Power-Stud+ SD1 is a fully threaded, torque controlled, wedge expansion anchor that is 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 Caltrans listing for "Stud Mechanical Expansion Anchors". Building code approved. *