| 摘要 |
The invention relates to a plastics fastening device for attachment on a threaded bolt. The device comprises a mounting section having a cylindrical aperture in which is disposed a thin-walled cylindrical sleeve connected to an interior wall of the aperture by a plurality of radially extending ribs. The mounting of the device on a bolt is facilitated by the provision of a plurality of longitudinally extending grooves on an inner surface of said cylindrical sleeve. |
