How to fit a furniture leg using a D-Nut with screw flange and a threaded bolt.The ideal fixing option for a secure fitting. You will need a hole for the D-Nut and a hammer to tap it into place. You do not have to use screws as the fixing will be secure without them. However, they are easy to add, should you wish. Tighten the leg by hand. The thread only needs a few turns to be secure.