| 摘要 |
A tapping screw (5) includes a head (50), a shank (51) and a cutting member (52), said shank has male threads (510), and the cutting member extends down from the shank and has a plurality of cutting grooves (520) formed lengthwise and/or a plurality of wings (521) also formed lengthwise, an annular groove (53) is further provided between the shank and a cutting groove (520) for accommodating wood waste cut out of a drilled hole of an object (6) removed smoothly and quickly, so the sharpness of the cutting member and a pointed end (522) may be remained, and resistance against drilling and fixing of the screw may be reduced. <IMAGE>
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