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> 5PCS ng-4250L K420 kennametal .250 grooving insert
5PCS ng-4250L K420 kennametal .250 grooving insert
5pcs Kennametal Top Notch Grooving Inserts NG-4250L Grade K420
Kennametal K420 is a tough WC/TaC/TiC/CO alloyed steel cutting grade. It has superior edge strength and thermal shock resistance for milling or turning through severe interruptions at high chip loads; also used for heavy roughing and semi-finishing of all soft to moderately hard steels. ANSI classification is C5-C6 and ISO classification is P30-P40, M25-M40