Offering up to twice the strength of double expansion anchors, these US-made anchors expand in four directions for a superior grip in floors, walls, and ceilings. You can even use them to mount heavy machinery with constant motion, such as conveyors and vibrating feeders, because their ridges lock them in place to resist vibration. All of these anchors expand along their full length to distribute the gripping force, so they won’t crack soft materials. You can use them in concrete near edges, corners, or other weak points as an alternative to drop-in anchors.

To install, tap the anchor into a drilled hole. Insert a screw or threaded rod through your machinery and into the anchor. Then, tighten to expand the anchor. All create a permanent female-threaded connection that lets you remove and reinstall a screw or threaded rod.

Secure window frames and doors in walls where your drilling depth is limited. These anchors have similar strengths to double expansion anchors but only need about 75% of the installation depth. All have a sleeve that expands inside your hole to create a strong grip. The sleeve, commonly called a caulking sleeve, also creates a seal to block out air and moisture. Since the gripping force is distributed along the entire length of these anchors, they won’t crack soft materials like block and brick. They’re also known as caulk-in anchors.

To install, place the anchor into a drilled hole, cone end first. Insert an installation tool (sold separately) into the anchor to expand the sleeve over the cone. Then, position your component, insert a screw or threaded rod, and tighten. All create a permanent female-threaded connection that lets you remove and reinstall a screw or threaded rod. They cannot be used in overhead applications.

Adjustable-Depth Installation Tools—Use the adjustable stop to set anchors at consistent depths.

Quick-Set Installation Tools—For high volume tasks, turn with a power drill to speed up repetitive installations.

Also known as double expansion anchors, these expand from both sides for full contact with your hole’s walls. They’re often used to mount handrails, shelving, and light fixtures. Since the gripping force is distributed along the entire length of the anchor, it won’t crack soft materials like block and brick. You can use these anchors as an alternative to drop-in anchors in concrete near edges, corners, or other weak points, but they are not as strong.

To install, hammer into a drilled hole and position your component. Then, insert a screw or threaded rod and tighten. For maximum expansion, the anchor should protrude slightly above the surface before threading the screw. All create a permanent female-threaded connection that lets you remove and reinstall a screw or threaded rod. They cannot be used in overhead applications.

Pair with large-diameter wood screws, often called lag screws, to secure heavy wood structures like beams and joists to block, brick, and concrete. As you tighten your screw, these anchors expand while their lobes grip the hole’s walls for a strong hold.

To install, tap the anchor into a drilled hole until it’s flush or slightly below the surface. Then, position your structure, insert a lag screw, and tighten. You can remove your lag screw to disassemble or adjust the structure. However, frequently removing the screw will weaken the strength. The anchor itself cannot be removed.

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.