Flat Bottom Drills • Flat-Bottom Applications

Flat bottom drills with through coolant offer precision and efficiency in holemaking operations. They excel in creating flat-bottom holes with accuracy and consistency across multiple workpiece materials. Kennametal drills are available in FBS for non-ferrous materials, FBG for steel and cast iron, and FBL for stainless steel and high-temperature alloys. These drilling tools feature a unique design with two effective cutting edges over the center, enabling high feed rates and optimal performance. Additionally, these application-specific solid carbide drills integrate two operations into one --removing the need for a 180° end mill in flat-bottom drilling or for preparing inclined or curved surfaces for drilling. This innovative approach streamlines the process, saving time and enhancing productivity. With the ability to create true flat-bottom holes from the outer diameter to the center, these drills are reliable solutions for your holemaking needs.

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  • Steel (134)
    • Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(80)
    • Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(80)
    • Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(80)
    • Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(80)
    • Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(80)
    • Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(134)
    • High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(134)
  • Stainless Steel (54)
    • Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(54)
    • High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(54)
    • Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(54)
  • Cast Iron (80)
    • Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(80)
    • Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(80)
    • High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(80)
  • Non-Ferrous Materials (59)
    • Wrought Aluminum (59)
    • Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(59)
    • High-Silicon Aluminum Alloys Si >12.2%(59)
    • Copper, Brass, Zinc-based on machinability index range of 70-100 (59)
  • High-Temp Alloys (54)
    • Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(54)
    • Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(54)
    • Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(54)
    • Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(54)
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  • Convex Drilling(193)
  • Corner Style SquareEnd Drilling(193)
  • CornerStyle Chamfer Drilling(193)
  • Counterboring(193)
  • Countersinking(65)
  • Cross Hole Drilling(192)
  • Drilling(193)
  • Flat Bottom Drilling(193)
  • Inclined Entry Drilling(193)
  • Inclined Exit Drilling(193)
  • X-Offset Drilling(2)
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KenDrill™ Flat Bottom Drills  - Kennametal
Flat Bottom Drills • Flat-Bottom Applications
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