T-tracks provide variable mounting points for jigs, hold-downs, featherboards, and other accessories. You cut them to the desired length and install them flush with your work surface, using flat-head screws. With the track installed, you can secure your jig or accessory to your work surface with T-bolts or 1/4″ hex head bolts paired with nuts or threaded knobs.
T-tracks commonly measure 1/2″ deep, 3/4″ wide, and 12″ or 48″ long. Tracks with these dimensions accept T-bolts or 1/4″ hex head bolts, while larger tracks accept 5/16″ fasteners. The deeper trench of the Incra T-track, shown above, conveniently accepts bolt ends and nuts as well.
If you secure your jig with hex head bolts, you’ll have to slide them in from the end of the T-track, which can be a PITA if you’ve already got accessories in place. T-bolts, on the other hand, you can install at any point on the track — just insert and rotate. You might have more trouble finding them locally, though.
Whichever bolts you go with, threaded knobs maximize the ease of using your T-track.
T-Tracks and Accessories [Rockler]
T-Track Accessories [Woodcraft]
T-Tracks and Accessories [MLCS]
McMaster Carr [Corporate Site]
Incra 24″ T-Track Via Amazon (B0000DD5EX) [What’s This?]