T-nut
Encyclopedia
A T-nut, also known as a blind nut, is a type of nut
Nut (hardware)
A nut is a type of hardware fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads' friction, a slight stretch of the bolt, and compression of the parts...

used to fasten a wood, particle or composite materials workpiece, leaving a flush surface. It has a long, thin body and a flange at one end, resembling a T in profile. The flanges of T-nuts often have hooks or serrations on the prongs that sink into a wooden work piece, providing better retention.

In 1969, the first 4 prong t-nut with the 8-sided base was patented. Unlike the standard round base t-nuts, the 8 sided T-nuts can be fed efficiently and reliably via machine. The 8-sided t-nut base has become the standard configuration for t-nuts inserted by machine.

Another type T-nut is used in work-holding in machine tools. T-Nuts fit in T-section slots in the machine work-table and are used in conjunction with studs and clamps to provide flexible means of holding workpieces in place.
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