Extruding and tapping screw

Details Extruding and tapping screw Extruding and tapping screw

F - Mech Eng,Light,Heat,Weapons

16

B

85/106

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

Patent

CA 1110473

EXTRUDING AND TAPPING SCREW Abstract of the disclosure A threaded fastener particularly designed for extruding and forming threads in a sheet metal material. threaded shank region and threaded, generally, conical point region are interconnected by a thread-forming and extruding region which includes a plurality of partially formed threads both in circumferential extent and depth of impression. The thread-forming region tapers down- wardly toward the point region at an angle of about 6° to maximize the thread-forming capabilities of the screw.

313163

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