Which anchor type has the lowest duty rating in drywall?

The anchor type with the lowest duty rating in drywall is plastic anchors. These anchors are typically used for lightweight applications, such as hanging picture frames or lightweight shelving. They rely on the friction created by expanding when driven into the wall, which can support weights generally up to about 10-25 pounds.

In contrast, metal anchors, toggle bolts, and wood screws provide greater load capacity. Metal anchors can handle heavier loads due to their strong materials and design. Toggle bolts are particularly effective for holding heavier items because they expand within the wall cavity, providing a secure grip against the back of the drywall. Wood screws, when properly anchored into wooden studs or other structural elements, can also bear significantly more weight than plastic anchors. Thus, while plastic anchors are convenient and easy to install for lighter items, they have the lowest duty rating when it comes to securing items in drywall.