T-slot structural framing

T-slot structural framing is a framing system consisting of lengths of square or rectangular extruded aluminum, typically 6105-T5 aluminium alloy, with a T-slot down the centerline of one or more sides. It is also known as 80/20 framing, after the company 80/20, Inc., one of the prominent T-slot framing brands, the name of which is based on the 80/20 principle. While there is no published standard defining this framing system, manufacturers have settled into two categories of product comprising several series each that is generally intercompatible across manufacturers.

Example of 80/20 T-slotted profiles, 10 and 15 series

Profiles

T-slot framing is divided into metric and fractional (imperial) categories. The T-slot is always centered along the long-axis of the piece. Pieces are available in each series with a square cross-section. Rectangular cross sections are available as well which measure x by 2x (where x is the defined width) - e.g. 40mx80mm for 40 series.

Profile type	Profile name	Profile size
fractional	10 series	1"
	15 series	1.5"
metric	20 series	20 mm
	25 series	25 mm
	30 series	30 mm
	40 series	40 mm
	45 Series	45 mm

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  CAD model of a rotating T-nut used with aluminium T-slots/ T-track/ extrusions
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  T-nut (red) installed in a T-Slot

See also

• T-slot nut
• T-nut
• Strut channel

References