Drop-in anchors are specifically designed for female concrete anchoring projects. They are ideal for applications in solid concrete where a flush-mount anchor is required for bolts to be easily inserted and removed, such as hanging pipework, ductwork, and structural steel.
Selecting the correct size depends on the thickness of the fixture being fastened, the weight load capacity required, and the depth of the base material. It is recommended to check the manufacturer load charts for specific shear and tension requirements.
Wedge anchors feature a mechanical expansion mechanism that provides reliable, high-strength holding power in solid concrete. They are ideal for securing heavy machinery, structural framing, and highway railings due to their resistance to pull-out forces.
Molly anchors are designed specifically for hollow walls, such as drywall or plaster. Unlike standard plugs, they expand behind the wall board, distributing the load over a larger surface area to prevent damage to the wall when holding medium-to-heavy items.
Cleaning the drilled hole removes concrete dust and debris. If not cleaned, the friction between the anchor and the concrete wall is reduced, which can decrease the maximum holding power of the anchor by up to 50%.