Suggestions

Product Suggestions

Product Categories

Resources

successfully added to cart
View Cart

Notifications

Mark all as read
EXIT SEARCH
Back to Solution
Contact us
HPR • K256 • 8 x D • Internal Coolant
HPR • K256 • 8 x D • Internal Coolant
HPR • K256 • 8 x D • Internal Coolant
HPR • K256 • 8 x D • Internal Coolant
HPR • K256 • 8 x D • Internal Coolant
HPR • K256 • 8 x D • Internal Coolant
HPR • K256 • 8 x D • Internal Coolant
HPR • K256 • 8 x D • Internal Coolant

HPR Drill• K256 • 8 x D • Internal Coolant • HA Shank

HPR • K256 • 8 x D • Internal Coolant

Uses and application

  • DrillingDrilling
  • Drilling: Inclined ExitDrilling: Inclined Exit
  • Drilling: Stacked PlatesDrilling: Stacked Plates
  • Drilling: Cross-Hole DrillingDrilling: Cross-Hole Drilling

Workpiece Materials

P Steel
K Cast Iron
HPR • K256 • 8 x D • Internal Coolant
Filters and Columns
Select Filters
Filters
Filters
Filters
View filters in
Metric
Inch
Key Filters
Workpiece Material
Workpiece Material
  • P Steel (18)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (18)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (18)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS
      (18)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS
      (18)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS
      (18)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS
      (18)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS
      (18)
  • K Cast Iron (18)
    • K1
      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS
      (18)
    • K2
      Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS
      (18)
    • K3
      High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS
      (18)
Applications
Applications
  • Cross Hole Drilling Cross Hole Drilling (18)
  • Drilling Drilling (18)
  • Inclined Exit Drilling Inclined Exit Drilling (18)
  • Stacked Plates Drilling Stacked Plates Drilling (18)
Cutting Diameter
Cutting Diameter
  • 3.175 mm (1)
  • 4.7625 mm (1)
  • 5.5575 mm (1)
  • 6.35 mm (1)
  • 7.0 mm (1)
  • 7.145 mm (1)
  • 7.9375 mm (1)
  • 8.3337 mm (1)
  • 8.7325 mm (1)
  • 9.1288 mm (1)
  • 9.525 mm (1)
  • 9.9212 mm (1)
  • 10.32 mm (1)
  • 10.7163 mm (1)
  • 11.1125 mm (1)
  • 11.5087 mm (1)
  • 12.7 mm (1)
  • 14.2875 mm (1)
Cutting Diameter Min to Cutting Diameter Max
Cutting Diameter
Cutting Diameter
  • 0.125 in (1)
  • 0.1875 in (1)
  • 0.2188 in (1)
  • 0.25 in (1)
  • 0.2756 in (1)
  • 0.2813 in (1)
  • 0.3125 in (1)
  • 0.3281 in (1)
  • 0.3438 in (1)
  • 0.3594 in (1)
  • 0.375 in (1)
  • 0.3906 in (1)
  • 0.4063 in (1)
  • 0.4219 in (1)
  • 0.4375 in (1)
  • 0.4531 in (1)
  • 0.5 in (1)
  • 0.5625 in (1)
Cutting Diameter Min to Cutting Diameter Max
Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
  • 1.25 in (1)
  • 1.5 in (1)
  • 2.0 in (2)
  • 2.5 in (3)
  • 3.0 in (4)
  • 3.5 in (4)
  • 4.0 in (2)
  • 4.5 in (1)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
  • 31.75 mm (1)
  • 38.1 mm (1)
  • 50.8 mm (2)
  • 63.5 mm (3)
  • 76.2 mm (4)
  • 88.9 mm (4)
  • 101.6 mm (2)
  • 114.3 mm (1)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
Reach
Reach
  • 37.084 mm (1)
  • 44.958 mm (1)
  • 58.928 mm (2)
  • 72.898 mm (3)
  • 87.884 mm (4)
  • 102.108 mm (4)
  • 116.078 mm (2)
  • 130.048 mm (1)
Reach Min to Reach Max
Reach
Reach
  • 1.46 in (1)
  • 1.77 in (1)
  • 2.32 in (2)
  • 2.87 in (3)
  • 3.46 in (4)
  • 4.02 in (4)
  • 4.57 in (2)
  • 5.12 in (1)
Reach Min to Reach Max
Back-End
Back-End Diameter
Back-End Diameter
  • 0.1875 in (2)
  • 0.25 in (2)
  • 0.3125 in (3)
  • 0.375 in (4)
  • 0.4375 in (4)
  • 0.5 in (2)
  • 0.5625 in (1)
Back-End Diameter Min to Back-End Diameter Max
Back-End Diameter
Back-End Diameter
  • 4.7625 mm (2)
  • 6.35 mm (2)
  • 7.9375 mm (3)
  • 9.525 mm (4)
  • 11.1125 mm (4)
  • 12.7 mm (2)
  • 14.2875 mm (1)
Back-End Diameter Min to Back-End Diameter Max
other
Over All Length [L]
Over All Length [L]
  • 76.2 mm (1)
  • 84.582 mm (1)
  • 98.552 mm (2)
  • 114.554 mm (3)
  • 131.572 mm (4)
  • 147.574 mm (4)
  • 164.592 mm (2)
  • 178.562 mm (1)
Over All Length [L] Min to Over All Length [L] Max
Over All Length [L]
Over All Length [L]
  • 3.0 in (1)
  • 3.33 in (1)
  • 3.88 in (2)
  • 4.51 in (3)
  • 5.18 in (4)
  • 5.81 in (4)
  • 6.48 in (2)
  • 7.03 in (1)
Over All Length [L] Min to Over All Length [L] Max
No filters matching ""
Change the visible columns with any of the parameters listed below. A maximum of 7 columns can be displayed.
Displaying 1- 10 of 18 results
Select Columns
Select Filters
Metric
Inch
Show
Metric
Inch
SAP Material Number ISO Catalog Number ANSI Catalog Number Grade [D1] Drill Diameter M [D1] Drill Diameter M [D1] Wire Size [L] Overall Length [L] Overall Length [L3] Flute Length [L3] Flute Length [L4] Maximum Drilling Depth [L4] Maximum Drilling Depth [L5] Drill Point Length [L5] Drill Point Length [LS] Shank Length [LS] Shank Length [D] Adapter / Shank / Bore Diameter [D] Adapter / Shank / Bore Diameter
6782608 K256A02188HPR K256A02188HPR KCK10A 5.5575 .2188   98.5520 3.880 58.9280 2.320 50.8000 2.000 1.6300 .0642 36.513 1.437 6.35 .25
    List price:
    $220.00 /each.
    Your price::
    6782616 K256A03750HPR K256A03750HPR KCK10A 9.5250 .3750   131.5720 5.180 87.8840 3.460 76.2000 3.000 2.8000 .1102 40.386 1.59 9.525 .375
      List price:
      $326.00 /each.
      Your price::
      6782611 K256A02813HPR K256A02813HPR KCK10A 7.1450 .2813   114.5540 4.510 72.8980 2.870 63.5000 2.500 2.1000 .0827 38.608 1.52 7.9375 .3125
        List price:
        $289.50 /each.
        Your price::
        6782617 K256A03906HPR K256A03906HPR KCK10A 9.9212 .3906   147.5740 5.810 102.1080 4.020 88.9000 3.500 2.9100 .1146 42.418 1.67 11.1125 .4375
          List price:
          $326.00 /each.
          Your price::
          6782612 K256A03125HPR K256A03125HPR KCK10A 7.9375 .3125   114.5540 4.510 72.8980 2.870 63.5000 2.500 2.3300 .0917 38.608 1.52 7.9375 .3125
            List price:
            $289.50 /each.
            Your price::
            6782615 K256A03594HPR K256A03594HPR KCK10A 9.1288 .3594   131.5720 5.180 87.8840 3.460 76.2000 3.000 2.6800 .1055 40.386 1.59 9.525 .375
              List price:
              $326.00 /each.
              Your price::
              6782614 K256A03438HPR K256A03438HPR KCK10A 8.7325 .3438   131.5720 5.180 87.8840 3.460 76.2000 3.000 2.5600 .1008 40.386 1.59 9.525 .375
                List price:
                $326.00 /each.
                Your price::
                6782606 K256A01250HPR K256A01250HPR KCK10A 3.1750 .1250   76.2000 3.000 37.0840 1.460 31.7500 1.250 0.9300 .0366 36.513 1.437 4.7625 .1875
                  List price:
                  $220.00 /each.
                  Your price::
                  6782607 K256A01875HPR K256A01875HPR KCK10A 4.7625 .1875   84.5820 3.330 44.9580 1.770 38.1000 1.500 1.4000 .0551 36.513 1.437 4.7625 .1875
                    List price:
                    $220.00 /each.
                    Your price::
                    6782631 K256A04531HPR K256A04531HPR KCK10A 11.5087 .4531   164.5920 6.480 116.0780 4.570 101.6000 4.000 3.3800 .1331 45.466 1.79 12.7 .5
                      List price:
                      $439.50 /each.
                      Your price::
                      6782609 K256A02500HPR K256A02500HPR KCK10A 6.3500 .2500 E 98.5520 3.880 58.9280 2.320 50.8000 2.000 1.8600 .0732 36.513 1.437 6.35 .25
                        List price:
                        $289.50 /each.
                        Your price::
                        6782618 K256A04063HPR K256A04063HPR KCK10A 10.3200 .4063   147.5740 5.810 102.1080 4.020 88.9000 3.500 3.0300 .1193 42.418 1.67 11.1125 .4375
                          List price:
                          $439.50 /each.
                          Your price::
                          6782610 K256A02756HPR K256A02756HPR KCK10A 7.0000 .2756   114.5540 4.510 72.8980 2.870 63.5000 2.500 2.0500 .0807 38.608 1.52 7.9375 .3125
                            List price:
                            $289.50 /each.
                            Your price::
                            6782613 K256A03281HPR K256A03281HPR KCK10A 8.3337 .3281   131.5720 5.180 87.8840 3.460 76.2000 3.000 2.4500 .0965 40.386 1.59 9.525 .375
                              List price:
                              $326.00 /each.
                              Your price::
                              6782634 K256A05625HPR K256A05625HPR KCK10A 14.2875 .5625   178.5620 7.030 130.0480 5.120 114.3000 4.500 4.1900 .1650 45.466 1.79 14.2875 .5625
                                List price:
                                $788.00 /each.
                                Your price::
                                6782619 K256A04219HPR K256A04219HPR KCK10A 10.7163 .4219   147.5740 5.810 102.1080 4.020 88.9000 3.500 3.1400 .1236 42.418 1.67 11.1125 .4375
                                  List price:
                                  $439.50 /each.
                                  Your price::
                                  6782632 K256A05000HPR K256A05000HPR KCK10A 12.7000 .5000   164.5920 6.480 116.0780 4.570 101.6000 4.000 3.7300 .1469 45.466 1.79 12.7 .5
                                    List price:
                                    $595.00 /each.
                                    Your price::
                                    6782620 K256A04375HPR K256A04375HPR KCK10A 11.1125 .4375   147.5740 5.810 102.1080 4.020 88.9000 3.500 3.2600 .1283 42.418 1.67 11.1125 .4375
                                      List price:
                                      $439.50 /each.
                                      Your price::
                                      List price:
                                      Discount: %
                                      Your price::
                                      Replacement This item is not available
                                      Replacement Product This item may be available through a distributor

                                      Grades

                                      • KCK10A
                                        P Steel
                                        K Cast Iron
                                      nominal size rangeD1 tolerance m7D tolerance h6
                                      1–30,002/0,0120,000/-0,006
                                      3–60,004/0,0160,000/-0,008
                                      6–100,006/0,0210,000/-0,009
                                      10–180,007/0,0250,000/-0,011
                                      18–25,40,008/0,0290,000/-0,013
                                      nominal size rangeD1 tolerance m7D tolerance h6
                                      .0394–.1181.0001/.0005.0000/-.0002
                                      .1181–.2362.0002/.0006.0000/-.0003
                                      .2362–.3937.0002/.0008.0000/-.0004
                                      .3937–.7087.0003/.0010.0000/-.0004
                                      .7087–1.0000.0003/.0011.0000/-.0005
                                      • HPR Drill - Solid Carbide Drill for Cast Iron

                                        HPR Drill - Solid Carbide Drill for Cast Iron

                                      • HPR Drill: Cross-Hole Craziness

                                        HPR Drill: Cross-Hole Craziness

                                      Support

                                      Chat With an Expert 
                                      Available Now
                                      Mon-Fri 8am - 6pm ET

                                      Global Support

                                      Shop

                                      Shop Kennametal Merchandise

                                      Find Us on Ariba

                                      Careers

                                      Work for Kennametal

                                      ✉ Stay In Touch

                                      Join our Mailing List

                                      ⤓ NOVO App

                                      Find Replacements for Obsolete Tools

                                      Download Now

                                      © 2022 Terms & Conditions of Use | Conditions of Sale | Data Privacy Policy

                                      Kennametal Inc. 525 William Penn Place Suite 3300, Pittsburgh, PA 15219

                                      product-image
                                      Please adjust the following properties from

                                      ISO Catalog Number

                                      ANSI Catalog Number

                                      to find similar products.
                                      You are about to create a duplicate . Do you want to proceed?
                                      You are about to delete Do you want to proceed?
                                      What would you like to rename your to?
                                      Please enter a valid name
                                      Please enter a name for the duplicate
                                      Please enter a valid name
                                      You are about to add to your My Solutions page. Do you want to proceed?
                                      Please enter a valid name
                                      Send a copy of

                                      Please enter a valid Email
                                      Please enter a valid name

                                      We have found the following CAD Drawings

                                      Select the files you are looking for and download them all at once

                                      Can’t find the file type you’re looking for?
                                      Request Drawings »

                                      You should be logged to see your dashboard information
                                      The product/s () you were trying to add to the cart is/are not available, please contact customer service.
                                      item(s) successfully added to the cart
                                      View Cart