Wood screw

Details Wood screw Wood screw

F - Mech Eng,Light,Heat,Weapons

16

B

85/105

F16B 35/04 (2006.01) F16B 25/00 (2006.01) F16B 25/10 (2006.01)

Patent

CA 1253018

ABSTRACT A wood screw is characterized in that its core is generally cylindrical with a diameter which does not exceed that of a prebored hole, that it comprises two threads, viz. a main thread and an auxiliary thread, of which the former protrudes considerably more from the circumference of the core than the latter and both of which are formed as sharp threads, i.e. are thin in relation to their depth, and that the front end of the cylindrical core is provided with a recess having an edge acting as a cutter.

481087

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