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A T-nut, T nut, or tee nut (also known as a blind nut,〔(Airfield Models - Threaded Fasteners used in Model Airplanes )〕 which can however also refer to a rivet nut or an insert 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 dig into a wooden work piece as the bolt is tightened from the opposite side of the 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. T-slot nuts are used in work-holding in machine tools. T-slot 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. Weld nuts are similar in appearance to t-nuts. They lack the prongs which penetrate into wood. Weld nuts are usually spot-welded into place on metal. ==References== de:Mutter (Technik)#Einschlagmutter 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「T-nut」の詳細全文を読む スポンサード リンク
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