| 摘要 |
A self tapping nut includes a round cylindrical cap, and an upper half of the cap is formed with a deformable portion with a thin wall. An upper edge of the deformable portion is formed as a protruding lip and a lower half of the cap is formed with an un-deformable portion. One end of the un-deformable portion of the cap is installed with a drilling head by which in use of the drilling head performing a drilling on a work piece directly and simplifying a process of a work.
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