More secure than masonry nails but not as strong as other anchors for concrete, these are often used to mount lightweight signs and control panels. Also known as tap-in rivets, they’re barbed to resist pullout after being hammered into a hole. All have a rounded head for a finished look that won’t snag on objects.

To install, hammer the anchor through your component into a drilled hole that’s slightly longer than the anchor until the head is flush with the surface. The anchor will compress and then expand inside the hole. To remove, pry out the anchor.