A drop-in anchor is a female anchor, that is it’s internally threaded. It’s designed only for solid concrete, just like the wedge anchor. It cannot be used with other types of materials such as brick or block-based. A drop-in anchor is dropped into a pre-drilled hole before it expands using a setting tool. The size of a drop-in anchor is determined by the inside diameter.

There are a variety of applications possible for construction anchors. Typically, they are used to secure objects to materials that are normally resistant to screw or nails, for example, concrete. There are a lot of different types of anchors to choose from depending on your needs.

Structural members which need anchors to be attached to masonry involves ledger beam, girders, floor and roof diaphragms, and other materials that might need to transfer their load to the masonry. Not only do anchors transfer gravity loads to masonry but they also can transfer lateral loads as well.