Our strongest drive anchors are best for securing objects such as safety railings and warning signs. All have a rounded head that offers a finished look, won’t snag on objects, and is hard to grip, preventing unwanted removal. Often used for permanent installations, you can't remove your object without yanking the anchor out. These one-piece anchors compress when hammered in and expand inside a drilled hole, creating a powerful grip. No tightening is needed, making them quicker to install than wedge anchors.

To install, hammer the anchor through your object into a drilled hole until the head is flush with the surface. The installation force stresses your base material, so avoid using the anchor near edges, corners, or in cracked surfaces.

These anchors are your go-to for suspending conduit, lighting, and pipe overhead in concrete. All have an internal plug that expands in four directions to create a tight grip before inserting a threaded rod or bolt. Since the grip is focused at the base, these anchors are best suited for concrete, which can handle the gripping pressure better than softer block and brick. They’re also known as drop-in anchors.

To install, place the anchor into the hole, insert the required installation tool (sold separately), and drive with a hammer until the shoulder of the tool contacts the anchor. All create a permanent female-threaded connection that lets you remove and reinstall a screw or threaded rod.

Install with the twist of a nut—no adhesive or special installation tool required. All of these anchors have a wedge-shaped base with expansion clips that widen against the hole’s sides, creating a tight grip for overhead use. They’re often used to suspend conduit, lighting, and pipes. Since the grip is focused at the base, these anchors are best suited for concrete, which can handle the gripping pressure better than softer block and brick. However, they are not as strong as our other anchors for concrete that are for overhead use.

To install, thread the anchor onto a threaded rod with a nut and washer. Then, tap into a drilled hole and turn the nut to expand the base. These anchors should be recessed—install to any depth greater than the minimum installation depth. Remove your component by unfastening the nut, but the anchor itself cannot be removed.