Wood screws capable of cutting wood

Details Wood screws capable of cutting wood Wood screws capable of cutting wood

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 25/04 (2006.01) F16B 25/10 (2006.01)

Patent

CA 2569131

A wood screw includes a head, a shank, an engagement thread, at least one parallel thread and at least one guiding thread. The head is for receiving a fastening tool. The shank extends from the head and includes a parallel shank portion, a tapered portion formed at the tip of the parallel shank portion and a pointed end formed at the tip of the tapered portion. The engagement thread is formed on the parallel shank portion. The at least one parallel thread is formed on the tapered portion. Then at least one guiding thread is formed on the tapered portion and between the parallel thread and the engagement thread.

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