Čo sú skrutky na rezanie závitov?

Athreadcuttingscrewisatypeofselftappingscrew-inthatitbothtapsandfastensinasingleoperation.
Andunlikeathreadrollingscrewwhichdisplaces / deformsthematerialinthenewlyformedthreadpath,
threadcuttingscrewsphysicallyremovethematerialintowhichtheyaredrivenastheyformnewmatingthreads.