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Top Notch™ Grooving

Kennametal Top Notch line of metalworking tools ensures you always achieve consistent and precise results throughout the long lifespans of our tungsten-carbide tool holders, boring bars, heads, cartridges and inserts. Kennametal grooving inserts are appropriate for a variety of steel, cast iron, alloys and non-ferrous metals. Top Notch grooving inserts are available in single- and double-ended configurations, giving you the flexibility to choose the optimal insert for each application.

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  • P Steel (424)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (424)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (424)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS (424)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS (424)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS (424)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS (424)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS (424)
  • M Stainless Steel (422)
    • M1
      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS (422)
    • M2
      High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS (422)
    • M3
      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS (422)
  • K Cast Iron (374)
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      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS (374)
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    • K3
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Minimum Axial Groove Diameter
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Maximum Axial Groove Diameter
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Maximum Axial Groove Diameter
Maximum Axial Groove Diameter
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