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Counterbores

267 products found

Pick up the porting tools and counterbores you need for precision machining operations at Grainger. Use porting tools for NC and CNC porting applications, to help contour ports in various metals, composites and hard-to-machine materials. The optimized helix design of socket head cap screw counterbores can flow chips away from the tool to help eliminate smearing and material build-up in the flutes. Shop Grainger today for high-quality porting tools and counterbores!Close

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  • Counterbore, 1/32 Clearance, Size 3/8, Co

    Brand
    KEO
    Item #
    2RTP6
    Mfr. Model #
    55223
    Counterbore,1/32 Clearance,Size 3/8,Co
    Web Price $68.25 / each
  • Counterbore, Close Fit, Size 3/8, Cobalt

    Brand
    KEO
    Item #
    2RTP4
    Mfr. Model #
    55221
    Counterbore,Close Fit,Size 3/8,Cobalt
    Web Price $70.00 / each
  • Port Tool, MS33649, Reamer, 7/8-14 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYK2
    Mfr. Model #
    MS33649-10R
    Port Tool,MS33649,Reamer,7/8-14 UNJF
    Web Price $257.50 / each
  • Counterbore, 1/32 Clearance, Size #4, Co

    Brand
    KEO
    Item #
    2RTL3
    Mfr. Model #
    55202
    Counterbore,1/32 Clearance,Size #4,Co
    Web Price $42.30 / each
  • Port Tool, MS16142, Reamer, 9/16-18 UNF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYJ7
    Mfr. Model #
    MS16142-6R
    Port Tool,MS16142,Reamer,9/16-18 UNF
    Web Price $222.00 / each
  • Counterbore Set, Close Fit, 7 PC, #6-1/2 In

    Brand
    KEO
    Item #
    1DBT3
    Mfr. Model #
    55239
    Counterbore Set,Close Fit,7 PC,#6-1/2 In
    Web Price $417.00 / each
  • Counterbore Set, 1/32 Clearance, 7 PC

    Brand
    KEO
    Item #
    1DBT5
    Mfr. Model #
    55241
    Counterbore Set,1/32 Clearance,7 PC
    Web Price $417.00 / each
  • Counterbore Set, 1/64 Clearance, 7 PC

    Brand
    KEO
    Item #
    1DBT4
    Mfr. Model #
    55240
    Counterbore Set,1/64 Clearance,7 PC
    Web Price $417.00 / each
  • Counterbore, Close Fit, Size #10, Cobalt

    Brand
    KEO
    Item #
    2RTN4
    Mfr. Model #
    55212
    Counterbore,Close Fit,Size #10,Cobalt
    Web Price $56.50 / each
  • Port Tool, MS16142, Reamer, 3/4-16 UNF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYJ9
    Mfr. Model #
    MS16142-8R
    Port Tool,MS16142,Reamer,3/4-16 UNF
    Web Price $238.00 / each
  • Counterbore, Close Fit, Size 1/4, Cobalt

    Brand
    KEO
    Item #
    2RTN7
    Mfr. Model #
    55215
    Counterbore,Close Fit,Size 1/4,Cobalt
    Web Price $58.75 / each
  • Counterbore, 1/32 Clearance, Size 1/4, Co

    Brand
    KEO
    Item #
    2RTN9
    Mfr. Model #
    55217
    Counterbore,1/32 Clearance,Size 1/4,Co
    Web Price $58.50 / each
  • Counterbore Set, Metric, 6 pcs., 3F, Medium

    Brand
    KEO
    Item #
    33UV22
    Mfr. Model #
    56226
    Counterbore Set,Metric,6 pcs.,3F,Medium
    Web Price $375.00 / each
  • Counterbore, Close Fit, Size 1/2, Cobalt

    Brand
    KEO
    Item #
    2RTR1
    Mfr. Model #
    55227
    Counterbore,Close Fit,Size 1/2,Cobalt
    Web Price $91.75 / each
  • Counterbore, 1/32 Clearance, Size 5/16, Co

    Brand
    KEO
    Item #
    2RTP3
    Mfr. Model #
    55220
    Counterbore,1/32 Clearance,Size 5/16,Co
    Web Price $59.75 / each
  • Port Tool, MS33649, Solid, 1 5/16-12 UNJ

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYL2
    Mfr. Model #
    MS33649-16S
    Port Tool,MS33649,Solid,1 5/16-12 UNJ
    Web Price $283.50 / each
  • Port Tool, RPT, Reamer, 1/4-28 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYP8
    Mfr. Model #
    RPT-3
    Port Tool,RPT,Reamer,1/4-28 UNJF
    Web Price $266.50 / each
  • Port Tool, MS33649, Reamer, 1 1/2-12 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYL3
    Mfr. Model #
    MS33649-18R
    Port Tool,MS33649,Reamer,1 1/2-12 UNJF
    Web Price $361.00 / each
  • Port Tool, RPT, Reamer, 5/16-24 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYP9
    Mfr. Model #
    RPT-4
    Port Tool,RPT,Reamer,5/16-24 UNJF
    Web Price $266.50 / each
  • Port Tool, RPT, Reamer, 9/16-18 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYR3
    Mfr. Model #
    RPT-8
    Port Tool,RPT,Reamer,9/16-18 UNJF
    Web Price $266.50 / each
  • Port Tool, MS33649, Reamer, 1/4-28 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYL4
    Mfr. Model #
    MS33649-1R
    Port Tool,MS33649,Reamer,1/4-28 UNJF
    Web Price $249.50 / each
  • Port Tool, RPT, Reamer, 7/32-28 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYP6
    Mfr. Model #
    RPT-2
    Port Tool,RPT,Reamer,7/32-28 UNJF
    Web Price $256.50 / each
  • Port Tool, RPT, Reamer, 3/8-24 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYR1
    Mfr. Model #
    RPT-5
    Port Tool,RPT,Reamer,3/8-24 UNJF
    Web Price $266.50 / each
  • Port Tool, MS33649, Reamer, 3/8-24 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYN1
    Mfr. Model #
    MS33649-3R
    Port Tool,MS33649,Reamer,3/8-24 UNJF
    Web Price $199.50 / each
  • Port Tool, MS16142, Reamer, 1 3/16-12 UN

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYG7
    Mfr. Model #
    MS16142-14R
    Port Tool,MS16142,Reamer,1 3/16-12 UN
    Web Price $296.00 / each
  • Port Tool, RPT, Reamer, 13/16-20 UNJEF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYP4
    Mfr. Model #
    RPT-12
    Port Tool,RPT,Reamer,13/16-20 UNJEF
    Web Price $285.00 / each
  • Port Tool, MS16142, Reamer, 1 1/16-12 UN

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYG5
    Mfr. Model #
    MS16142-12R
    Port Tool,MS16142,Reamer,1 1/16-12 UN
    Web Price $282.00 / each
  • Port Tool, MS16142, Reamer, 5/16-24 UNF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYH6
    Mfr. Model #
    MS16142-2R
    Port Tool,MS16142,Reamer,5/16-24 UNF
    Web Price $194.50 / each
  • Port Tool, MS33649, Solid, 1/4-28 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYL5
    Mfr. Model #
    MS33649-1S
    Port Tool,MS33649,Solid,1/4-28 UNJF
    Web Price $208.00 / each
  • Port Tool, MS16142, Reamer, 2 1/2-12 UN

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYH8
    Mfr. Model #
    MS16142-32R
    Port Tool,MS16142,Reamer,2 1/2-12 UN
    Web Price $575.00 / each
  • Port Tool, MS33649, Reamer, 9/16-18 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYN7
    Mfr. Model #
    MS33649-6R
    Port Tool,MS33649,Reamer,9/16-18 UNJF
    Web Price $222.00 / each
  • Port Tool, MS33649, Reamer, 1-12 UNJF

    Brand
    SCIENTIFIC CUTTING TOOLS
    Item #
    4XYK4
    Mfr. Model #
    MS33649-11R
    Port Tool,MS33649,Reamer,1-12 UNJF
    Web Price $282.00 / each
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Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More