For years the go to fasteners for poured concrete were wedge anchors. They offer fast relatively fool proof installations. Wedge anchors are a pretty straight forward install, drill the hole, blow it out, pound in the anchor and tighten. Your diameter that you drill is the same diameter as the wedge anchor. For instance, for a ½” wedge anchor you will use a ½” bit. Drill your hole at least ½” deeper than your intended embedment. You can drill all the way through the slab if you want in which case if you want to remove the anchor you could remove the nut and pound through. While diameter as small as ¼” are available, many times a Tapcon concrete screw would make a better choice when you get that small. Wedge anchors are available in diameters up to 1-1/4” and in standard zinc, mechanically galvanized and stainless steel.
Basics to remember when considering wedge anchors. Designed for poured concrete, not hollow applications. Drill bit matches diameter of anchor. Drill ½” beyond desired embedment. Follow manufacture’s recommended install, usually drill, clean pound in and tighten to recommended torque. Also follow minimum embedment guidelines. We stock a complete line of wedge anchors in diamters of 1/4″ to 1-1/4″ . If you don’t see the size you are looking for give us a call we likely have it. Standard finish is zinc but mechanically galvanized and stainless steel wedge anchors are available.