Superb product for intended purpose. I use for mounting side panels to drawers. This arrangement keeps external nuts from showing and snagging. Takes standard 1/4-20 screws (head type your choice). Since it is not always possible to have the exact length of screw available, if the screw sticks out, I use my Fein Vibratool with a metal cutting blade to cut off any excess screw. Don't depend on tightening the screw to pull the tabs to pull barbs into the wood, unless the wood is soft. Use a hammer to drive the T nut into the wood.