Thread-cutting screw

Details Thread-cutting screw Thread-cutting screw

F - Mech Eng,Light,Heat,Weapons

16

B

85/106

F16B 25/04 (2006.01) F16B 25/00 (2006.01) F16B 39/30 (2006.01)

Patent

CA 2015382

A thread forming screw has a shaft with a head and a tip at opposite ends of the shaft. The screw also has a thread which starts at the tip and runs at least partially along the shaft towards the head of the screw. The thread has first and second opposing flanks facing the tip and the head of the screw respectively. The thread, at least at the tip of the screw, has recesses in at least the first flank thereof. The recesses, which form undulations in the thread have upper borders which form an edge on the thread and are asymmetrical with a deeper front face and a shallower rear mace in screw in direction of the thread.

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