Description 15 Series Drop-In T-Nuts w/Set-Screw These parts are 100% Equivalent to the following manufacturers: #10-32 thread: T-Slots / Futura #651122 15FA3405 – 1/4-20 thread: 80/20 #3310 T-Slots / Futura #651123 Frame-World #EF-66 15FA3505 – 5/16-18 thread: 80/20 #3311 T-Slots / Futura #651124 Frame-World #EF-65 M6 x 1.0 thread: 80/20 #3898 or #40-1968 T-Slots / Futura #651425 Frame-World #EF-69 M8 x 1.25 thread: 80/20 #3894 or #40-1988 T-Slots / Futura #651421 Frame-World #EF-68 These Drop-In T-Nuts are a great way to bolt items to your 15 Series T-Slotted Aluminum Extrusions if the ends are covered. These T-Nuts have a set-screw that allows you to lock the T-Nut in place in the slots, and fit 15 Series extrusions. They can be loaded from the sides or ends of the extrusion. Imperial threads are black zinc coated, Metric threads are bright zinc coated
