T-nut

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For the hold down type of fastener, see T-slot nut.
T-nuts. The left one has been inserted in the wood and a bolt has been screwed in from the other side.

A T-nut, T nut, or tee nut (also known as a blind nut,[1] which can however also refer to a rivet nut) is a type of nut 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 four-prong T-nut with the eight-sided base was patented. Unlike the standard round base T-nuts, the eight-sided T-nuts can be fed efficiently and reliably via machine. The eight-sided T-nut base has become the standard configuration for T-nuts inserted by machine.[2][3][4]

Another type of 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.

References[edit]

  1. ^ Airfield Models - Threaded Fasteners used in Model Airplanes
  2. ^ US 3480061, Leistner, Walter Hermann, "Fastener member", issued 1969-11-25. 
  3. ^ Our history, retrieved 2009-10-21. 
  4. ^ About Sigma, retrieved 2009-10-21.