

Here’s how it works: A pilot hole is drilled into the drywall, and then the anchor is inserted into the hole. Known as “molly bolts” or simply “mollies,” these metal sleeve-type hollow wall anchors provide medium-weight holding power but offer a unique feature: the ability to remove the screw and reinsert it if necessary in the future.
#PLASTER ANCHORS INSTALL#
Easy to install with a screwdriver or screw gun.Cost $.25 to $.40 per anchor, depending on brand and size.Self-drilling no pilot hole necessary.Holding power of 25 to 75 pounds, depending on size.Threaded drywall anchors have the following attributes: Metal versions rely on a deeper thread for grip. With nylon versions, this forces the sides of the anchor to flare and wedge the anchor tightly against the drywall. Once the anchor is in the wall, the screw is inserted. They feature sharp, pointed shanks that can be screwed into the wall without a predrilled hole by using a screwdriver or a screw gun. Not suitable for use on ceiling drywall because downward pressure can cause the anchor to slip out.Īlso called “self-drilling drywall anchors” or “self-tapping anchors,” threaded drywall anchors are made of hard nylon or metal and are able to hold heavier items.Able to hold between 5 and 25 pounds, depending on brand and size.Affordable, averaging $.03 to $.20 per anchor, depending on size.Often made of plastic but may also be made of nylon or zinc-coated metal.When a screw is inserted into the anchor, the split ends of the shank spread, expanding and putting pressure on the inside of the drywall to hold it securely. To install, a pilot hole is drilled in the wall, the anchor is fitted into the hole, and then a hammer is used to lightly tap the anchor head flush with the wall.

The anchor’s shank (tapered end) is split in half. True to their name, expansion anchors spread to create a tight bond with the wall and are designed to hold lightweight items. Ease of installation, strength, and cost each have an impact, and each of these is discussed in the following section.

It’s important to understand how each type performs to choose the right one for the job. There are four main types of drywall anchors (also called hollow wall anchors), and each has its pros and cons.
#PLASTER ANCHORS TV#
