Look for stainless steel fasteners such as the Tapcon Screw, wedge anchor, sleeve anchor or drop-in anchor. These anchors are code recognized for uncracked and cracked concrete and seismic conditions (ICC-ES ESR-3699). anchor gets a 1/4-in.-dia. But it sounds like your concrete is pretty solid! Expansion anchors, such as wedge and sleeve anchors provide holding power by expanding into the hole, which creates pressure on the hole walls. drilling into the hollow sections will usually blow out the back and leave you with a very thin spot for the anchor. ADHESIVE SYSTEMS Base Material Anchor Diameter Head Style Working Load (Concrete) Coating / Material Approvals Similar Anchoring Products Concrete Lightweight Concrete Hollow Core Plank Grout-filled Concrete Masonry Hollow Concrete Masonry Solid Brick Hollow Brick Unreinforced Masonry Steel Drywall Stud Finished Hex Head Round / Acorn Nut Flat Head (countersunk) Mushroom Head Tie-Wire … Examining the Base Material When Choosing Concrete Fasteners, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/0b\/Choose-Concrete-Fasteners-Step-1.jpg\/v4-460px-Choose-Concrete-Fasteners-Step-1.jpg","bigUrl":"\/images\/thumb\/0\/0b\/Choose-Concrete-Fasteners-Step-1.jpg\/aid2238822-v4-728px-Choose-Concrete-Fasteners-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"
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