Used with a 1/4-20 bolt to mount joining plates, brackets, or other t-track accessories. Works great for our 1010, 1020, 1050, 2020, and many 1 inch based extrusions This t-nut is made out of 1010 steel with a bright zinc finish and is compatible with our 10 Series extruded aluminum profiles or 1., 0 based t slot aluminum extrusion. Used with a 1/4-20 bolt to mount joining plates, brackets, or other t-track accessories. It loads from the profile ends and has a pilot thread projection that adds additional threading for increased strength. 1/4-20 Slide-in T-nuts 8020, 3785, 10 Series Steel 14-20 Centered Slide In Faroe 1/4-20 Steel T-nuts ECONOMY T-NUTS, OFFSET-THREAD 124 x 1 inch long and works great as mainstay piece of your home improvement arsenal. The slide-in economy T-nut with centered thread is a cost-effective fastening option available with options in size, material, thread, and finish. 40-1961 | M6 Slide-in Economy T-Nut - Centered Thread | CPI Automation Works with many other competitor's extruded profiles.