self-tapping
(engineering) Able to advance when turned, while creating its own thread.
A village and civil parish in Cotswold district, Gloucestershire, England (OS grid ref ST9098).
A scientific instrument that measures changes in temperature.
The acorn woodpecker, Melanerpes formicivorus, a woodpecker of southwestern North America, noted for its habit of inserting acorns in holes which it drills in trees.
下穴を開けずに金具を固定するには、回転させると自らねじ山を切って進むねじを使ってください。
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DiQt
Free
★★★★★★★★★★