0000055242 kmt:CapitalStockParValue1.25PerShareMember exch:XNYS 2020-06-04 2020-06-04 0000055242 kmt:PreferredStockPurchaseRightsMember exch:XNYS 2020-06-04 2020-06-04 0000055242 2020-06-04 2020-06-04 false 0000055242 true 8-K 2020-06-04 Kennametal Inc. PA 1-5318 25-0900168 525 William Penn Place Suite 3300 Pittsburgh, PA 15219 412 248-8000 false false false false false Capital Stock, par value $1.25 per share KMT NYSE Preferred Stock Purchase Rights NYSE