| 摘要 |
The present invention provides a threaded fastening device assembly including an outer member having an upwardly extending and circumferentially disposed body with a non-threaded inner and outer surface, at least two inner members, each inner member having an internal surface which is threaded and an outer surface that is complimentary in shape to said inner surface of said outer member, wherein, said outer member is adapted to be slideably engageable with said inner members and wherein in use, said fastening assembly is rotatable and engageable with a complimentary threaded fastening shaft.
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