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Molly anchors are specifically designed for medium-duty fastening in hollow walls, such as drywall, plaster, and hollow tile. Once installed, the sleeve expands behind the wall to provide secure load-bearing support.
Chemical anchors are ideal for high-load applications and installations close to edges or with close spacing. Since they do not cause expansion stress in the base material, they are perfect for brick, concrete, and masonry where mechanical stress might cause cracking.
It depends on the anchor type. Heavy-duty expansion anchors are designed for solid concrete. For hollow blocks, specialized hollow-block anchors or sleeve anchors are recommended to ensure proper grip without damaging the block structure.
To select the correct drywall anchor, you must determine the weight of the object you plan to hang and the thickness of your drywall. Different anchors are rated for different weight limits, ranging from light-duty self-drilling anchors to heavy-duty toggle bolts.
Drop-in anchors are female concrete anchors that require a setting tool to expand the internal plug inside solid concrete before a bolt is threaded. Sleeve anchors are pre-assembled male anchors that expand as the nut is tightened, making them easier to install directly through the fixture.
