Introducing the Screw-on Tee Nut by POWERTEC. Its your essential hardware solution when you want to securely and efficiently attach your 5/16 in. threaded components to your wooden pieces. The flange top plate design has 3 predrilled mounting holes for easy installation (installation screws included). The screw-fastened installation, along with 3 external protrusions on the ID of the nut, effectively ensures that your screws wont loosen or spin with use. Another great advantage of this style of nut is that you can attach the tee nut on the mating surface of the connection (instead of installing through the back). This streamlined feature is essential when installing legs, glides, levelers and casters and more - to your furniture or when attaching bedposts to bed frames. Whether you're replacing wobbly legs on your sofa, mobilizing your workbench with casters or adding gliders to your furniture, you can depend upon these handy tee nuts for solid, fixed attachment. Woodworkers, builders, makers, carpenters, home improvers and craftsman - professional and DIYers alike agree that a well-stocked shop makes for happy workers and perfect projects.