Measures .505 x .125 x .812 inches long with a 1/4-20 thread 15 Series compatible Made out of 1010 steel with a bright zinc finish The slide-in economy T-nut with centered thread is a cost-effective fastening option available with options in size, material, thread, and finish. It loads from the profile ends and has a pilot thread projection that adds additional threading for increased strength. The centered thread of the slide-in economy T-nut lends itself to connections towards the middle of a profile or with a flat plate.