T-nut
A T-nut, T nut, or tee nut[1] (also known as a blind nut,[2] 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 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.[3][4][5]
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.
[edit] References
- ^ [1]
- ^ http://www.airfieldmodels.com/information_source/model_aircraft_hardware/threaded_fasteners.htm
- ^ US 3480061, Leistner, Walter Hermann, "Fastener member", issued 1969-11-25.
- ^ Our history, http://www.specialtyfasteners.net/history.htm, retrieved 2009-10-21.
- ^ About Sigma, http://www.sigmatool.com/information/about, retrieved 2009-10-21.
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