Screw

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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85/104

F16B 39/28 (2006.01)

Patent

CA 1259208

ABSTRACT The screw is provided with a three-lobed thread and has a tip portion, followed by a threaded intermediate portion with a three-lobed thread geometry, which passes into a further threaded portion that has a circular thread geometry. In all three threaded portions the flank angle of the thread is 60° and the flank angle of the thread crests extending beyond the nominal diameter of the screw is 30°.

460518

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