To provide a female threaded piece capable of working well with various article supporting leg devices having different bolt length, supporting the article by an article supporting leg device associated with a height adjustment of the article even if the bolt is free of a bolt turning part such as a wrench engagement part, and accordingly contributing to cost reduction of the article supporting leg device.
The female screw device 1 works with the article supporting leg device 5 having the bolt 52 and a bolt pedestal 51 for screwing the bolt fast to an object to be supported W and is equipped with a threaded member 11, a thrust bearing 12, a female threaded pedestal 13, and a coupling member 14 to couple together the member 11 and the pedestal 13, wherein the coupling member 14 couples together the female threaded member 11 and the female threaded pedestal 13 in such a way as capable of relative rotation in the condition that the thrust bearing 12 is interposed between them.
KUMASHIRO TERUO
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