硬木用鋸齒牙螺絲

Wood Construction Screw, Terrace Screw

Wood Construction Screw, Terrace Screw

Large wafer head countersunk (csk) head, milling ribs (U thread), thread with 1 slot

Large wafer head countersunk (csk) head, milling ribs (U thread), thread with 1 slot

Double countersunk head with 6 nibs, milling ribs (U thread), thread with 1 slot

Double countersunk head with 6 nibs, milling ribs (U thread), thread with 1 slot

Double countersunk head with 6 nibs, milling ribs (U thread) and saw thread (serrated cutting teeth)

Double countersunk head with 6 nibs, milling ribs (U thread) and saw thread (serrated cutting teeth)

Oval trim countersunk head with 4 nibs, milling ribs (U thread) and saw thread (serrated cutting teeth)

Oval trim countersunk head with 4 nibs, milling ribs (U thread) and saw thread (serrated cutting teeth)