Screws, Nails and Wall Anchors: What Holds What

Picking the right fastener is the difference between a shelf that stays up and a hole in the wall. Here is a quick guide.

Fastening Into Studs

Studs give the strongest hold. Wood screws and structural screws carry heavy loads like TVs, shelves, cabinets and handrails. A stud finder and a small pilot hole help prevent splitting.

When you can hit a stud, use it.

Anchors for Hollow Walls

When there is no stud, use anchors rated for the load: toggle bolts and strap-style anchors for heavy items, expansion anchors for medium loads, and light plastic anchors only for light frames.

Always check the rating and add margin.

Masonry and Outdoors

Brick, block and concrete need masonry screws or sleeve anchors and a hammer drill. Outdoors, use stainless or coated fasteners so rust does not stain wood and weaken the hold.

Rust is one of the most common reasons rails and decks loosen.