So, for light to medium holding applications, a sleeve anchor is a good choice. They can be used in concrete but are not considered as strong as a wedge anchor. Sleeve anchors are fairly simple to use and are primarily used in brick or block. The limit of expansion highly reduces the chance of cracking brick or block. The result it a limited but effective amount of expansion on the anchor. As you fasten the screw it will pull the bottom towards the middle and force the top down to the middle as well.
To install a double expansion shield anchor, simply drill a hole large enough for the anchor to drop into and then install the screw into the anchor. The reason for this is to prevent brick from cracking. As a screw is driven into the anchor, it starts to pull down towards the middle resulting in an expanded anchor. Double Expansion Shield Anchorĭouble Expansion Shield Anchors are used primarily used in brick and block. This allows the bolt to tighten down on the material being hung. Then using either a Phillips or Slotted head screwdriver, the bolt is driven into the toggle wing pulling it against the other side of the wall. Once in the hollow part of the wall, the toggle wing will expand. To install one of these anchors, first a hole must be drilled big enough for the toggle portion of the anchor to push though. It is not recommended to use heavy weight on these anchors especially in drywall as they will rip through the material. They are also commonly used in drywall applications. This is common when cinder blocks are used to create the walls of a building. Toggle Wing AnchorsĪ Toggle Wing Anchor is used when a hollow wall is present. The pin is driven down through the middle of the fastener pushing both sides out in a wedge fashion holding the fastener in place. Once the lip is seated against the top of the material, hit the exposed pin with a hammer. To install one of these pin anchors, drill a hole through both materials and drop the anchor into the hole. They have a lip over the head making it compatible with holes that may have accidentally been driven too far into the material.
Hammer Driven Pin AnchorĪ Hammer Driven Pin Anchor is a small anchor which is mostly used to fasten plywood to concrete. Once installed to the silver head, remove the wrench and screw in a piece of threaded rod.
To install a Sammys screw, first drill a hole into the material and use a wrench or socket to drive the anchor into the material. There are many types of these hanging anchors available. The term Sammys, much like Tapcon, is a brand name. Sammys are commonly used in HVAC applications for hanging duct. Most often installed vertically or horizontally, these anchors have a threaded opening used to receive threaded rod. Sammys Screws are a common anchor used for hanging applications. Make sure you use a screw that is long enough to reach through both materials otherwise you will not have a firm hold. First, drill a hole through both materials and then simply drive the screw into the hole. Installing a concrete screw is very simple. They are available in both Phillips flat head (for flush finishes) and hex head (for ease of installation). They are used for fastening wood or metal to different masonry materials. Concrete screws are easy to identify based on their bright blue coating. Masonry Concrete Screws, sometimes referred to as Tapcons, are probably the most common concrete fastener used. Lag screw anchors also do not require a setting tool to install. Lag Shield Anchors are very similar to a drop in anchor but are designed specifically to take a lag screw. Lag shields are made of two parts and when the lag screw is driven into the shield, it expands resulting in a tight wedge in the concrete. Lag Shield AnchorsĪ Lag Shield Concrete Anchor is used in combination with a lag screw to create an anchor in concrete. The bottom portion of the anchor will deform resulting in a wedged anchor that cannot be removed. Then drop the anchor into the hole and seat the setting tool inside of it. To install the drop in anchor, drill a hole the same diameter as the anchor and only as deep as the anchor itself. Some masonry anchors have a lip to prevent the anchor from dropping too far into the concrete. They are also available in coil threading (a coarser thread for coil threaded rod). They are used in high strength applications by fastening a bolt into the internal threading of the anchor. Drop In AnchorsĪ Masonry Drop In Anchor is mostly used in poured concrete. Listed below are some of the more common fasteners found in the masonry field. The problem for many is determining which of these anchors they need to perform the job. There are many types of masonry anchors available today.