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Athreadcuttingscrewisatypeofselftappingscrew-inthatitbothtapsandfastensinasingleoperation
Andunlikeathreadrollingscrewwhichdisplaces / deformsthematerialinthenewlyformedthreadpath,
threadcuttingscrewsphysicallyremovethematerialintowhichtheyaredrivenastheyformnewmatingthreads