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Holemaking Products - Counterbores & Porting Tools For Sale | A1 Tooling - (1669 Products)

Made in USA - 4 Flutes, 1-1/4" Diam, 1/2" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 1-1/4" Diam, 1/2" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore


Item #: 09938242
Brand: Made in USA
Model #:

Features and Benefits

Carbide tips cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Counterbore Diameter (Inch) 1-1/4
Pilot Hole Diameter (Inch) 1/2
Counterbore Material Carbide-Tipped
Standard Pilot Model Number Compatibility 185-8
Oversize Pilot Model Number Compatibility 186-17
Number of Flutes 4
Overall Length (Inch) 7/8
Corner Radius (Inch) 1/64
Aircraft-Style No

$255.11

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Made in USA - 4 Flutes, 3/8" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 3/8" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore


Item #: 09937962
Brand: Made in USA
Model #:

Features and Benefits

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Product Specifications
Counterbore Diameter (Inch) 3/8
Pilot Hole Diameter (Inch) 3/16
Counterbore Material Solid Carbide
Standard Pilot Model Number Compatibility 185-4
Oversize Pilot Model Number Compatibility 186-4
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/64
Aircraft-Style No

$133.22

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Made in USA - 4 Flutes, 3/4" Diam, 5/16" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 3/4" Diam, 5/16" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937376
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 3/4
Pilot Hole Diameter (Inch) 5/16
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-6
Oversize Pilot Model Number Compatibility 186-9
Number of Flutes 4
Overall Length (Inch) 5/8
Corner Radius (Inch) 1/32
Aircraft-Style No

$60.24

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Made in USA - 4 Flutes, 1-1/4" Diam, 3/8" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 1-1/4" Diam, 3/8" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore


Item #: 09938234
Brand: Made in USA
Model #:

Features and Benefits

Carbide tips cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Counterbore Diameter (Inch) 1-1/4
Pilot Hole Diameter (Inch) 3/8
Counterbore Material Carbide-Tipped
Standard Pilot Model Number Compatibility 185-7
Oversize Pilot Model Number Compatibility 186-14
Number of Flutes 4
Overall Length (Inch) 7/8
Corner Radius (Inch) 1/64
Aircraft-Style No

$244.56

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Made in USA - 4 Flutes, 7/16" Diam, 1/8" Pilot Hole Diam, Solid Carbide Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 7/16" Diam, 1/8" Pilot Hole Diam, Solid Carbide Reverse Counterbore


Item #: 09937970
Brand: Made in USA
Model #:

Features and Benefits

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Product Specifications
Counterbore Diameter (Inch) 7/16
Pilot Hole Diameter (Inch) 1/8
Counterbore Material Solid Carbide
Standard Pilot Model Number Compatibility 185-2
Oversize Pilot Model Number Compatibility 186-2
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/64
Aircraft-Style No

$159.74

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Made in USA - 4 Flutes, 7/16" Diam, 5/32" Pilot Hole Diam, Solid Carbide Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 7/16" Diam, 5/32" Pilot Hole Diam, Solid Carbide Reverse Counterbore


Item #: 09937988
Brand: Made in USA
Model #:

Features and Benefits

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Product Specifications
Counterbore Diameter (Inch) 7/16
Pilot Hole Diameter (Inch) 5/32
Counterbore Material Solid Carbide
Standard Pilot Model Number Compatibility 185-3
Oversize Pilot Model Number Compatibility 186-3
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/64
Aircraft-Style No

$151.90

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Made in USA - 4 Flutes, 7/16" Diam, 1/8" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 7/16" Diam, 1/8" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937210
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 7/16
Pilot Hole Diameter (Inch) 1/8
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-2
Oversize Pilot Model Number Compatibility 186-2
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/32
Aircraft-Style No

$31.49

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Made in USA - 4 Flutes, 7/16" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 7/16" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore


Item #: 09937996
Brand: Made in USA
Model #:

Features and Benefits

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Product Specifications
Counterbore Diameter (Inch) 7/16
Pilot Hole Diameter (Inch) 3/16
Counterbore Material Solid Carbide
Standard Pilot Model Number Compatibility 185-4
Oversize Pilot Model Number Compatibility 186-4
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/64
Aircraft-Style No

$136.97

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Made in USA - 4 Flutes, 1/2" Diam, 1/4" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 1/2" Diam, 1/4" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937269
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 1/2
Pilot Hole Diameter (Inch) 1/4
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-5
Oversize Pilot Model Number Compatibility 186-5
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/32
Aircraft-Style No

$34.14

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Made in USA - 4 Flutes, 11/16" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 11/16" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore


Item #: 09938093
Brand: Made in USA
Model #:

Features and Benefits

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Product Specifications
Counterbore Diameter (Inch) 11/16
Pilot Hole Diameter (Inch) 3/16
Counterbore Material Solid Carbide
Standard Pilot Model Number Compatibility 185-4
Oversize Pilot Model Number Compatibility 186-7
Number of Flutes 4
Overall Length (Inch) 5/8
Corner Radius (Inch) 1/64
Aircraft-Style No

$182.09

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Made in USA - 4 Flutes, 2" Diam, 3/4" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 2" Diam, 3/4" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore


Item #: 09938309
Brand: Made in USA
Model #:

Features and Benefits

Carbide tips cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Counterbore Diameter (Inch) 2
Pilot Hole Diameter (Inch) 3/4
Counterbore Material Carbide-Tipped
Standard Pilot Model Number Compatibility 185-10
Oversize Pilot Model Number Compatibility 186-22; 186-23; 186-24
Number of Flutes 4
Overall Length (Inch) 1
Corner Radius (Inch) 1/64
Aircraft-Style No

$464.89

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Made in USA - 4 Flutes, 3/8" Diam, 1/8" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 3/8" Diam, 1/8" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937186
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 3/8
Pilot Hole Diameter (Inch) 1/8
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-2
Oversize Pilot Model Number Compatibility 186-2
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/32
Aircraft-Style No

$31.20

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Made in USA - 4 Flutes, 5/16" Diam, 5/32" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 5/16" Diam, 5/32" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937178
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 5/16
Pilot Hole Diameter (Inch) 5/32
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-3
Oversize Pilot Model Number Compatibility 186-3
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/32
Aircraft-Style No

$31.01

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Made in USA - 4 Flutes, 1-1/2" Diam, 5/8" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 1-1/2" Diam, 5/8" Pilot Hole Diam, Carbide-Tipped Reverse Counterbore


Item #: 09938267
Brand: Made in USA
Model #:

Features and Benefits

Carbide tips cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Counterbore Diameter (Inch) 1-1/2
Pilot Hole Diameter (Inch) 5/8
Counterbore Material Carbide-Tipped
Standard Pilot Model Number Compatibility 185-9
Oversize Pilot Model Number Compatibility 186-20; 186-21
Number of Flutes 4
Overall Length (Inch) 7/8
Corner Radius (Inch) 1/64
Aircraft-Style No

$353.25

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Made in USA - 4 Flutes, 5/8" Diam, 1/4" Pilot Hole Diam, Solid Carbide Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 5/8" Diam, 1/4" Pilot Hole Diam, Solid Carbide Reverse Counterbore


Item #: 09938077
Brand: Made in USA
Model #:

Features and Benefits

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Product Specifications
Counterbore Diameter (Inch) 5/8
Pilot Hole Diameter (Inch) 1/4
Counterbore Material Solid Carbide
Standard Pilot Model Number Compatibility 185-5
Oversize Pilot Model Number Compatibility 186-8
Number of Flutes 4
Overall Length (Inch) 5/8
Corner Radius (Inch) 1/64
Aircraft-Style No

$160.04

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Made in USA - 4 Flutes, 1/4" Diam, 3/32" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 1/4" Diam, 3/32" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937137
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 1/4
Pilot Hole Diameter (Inch) 3/32
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-1
Oversize Pilot Model Number Compatibility 186-1
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/32
Aircraft-Style No

$30.67

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Made in USA - 4 Flutes, 5/16" Diam, 1/8" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 5/16" Diam, 1/8" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937160
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 5/16
Pilot Hole Diameter (Inch) 1/8
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-2
Oversize Pilot Model Number Compatibility 186-2
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/32
Aircraft-Style No

$32.29

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Made in USA - 4 Flutes, 5/8" Diam, 1/4" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 5/8" Diam, 1/4" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937319
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 5/8
Pilot Hole Diameter (Inch) 1/4
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-5
Oversize Pilot Model Number Compatibility 186-8
Number of Flutes 4
Overall Length (Inch) 5/8
Corner Radius (Inch) 1/32
Aircraft-Style No

$39.26

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Made in USA - 4 Flutes, 1/2" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 1/2" Diam, 3/16" Pilot Hole Diam, Solid Carbide Reverse Counterbore


Item #: 09938010
Brand: Made in USA
Model #:

Features and Benefits

Solid carbide provides better rigidity than high speed steel. It is extremely heat resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials.
Product Specifications
Counterbore Diameter (Inch) 1/2
Pilot Hole Diameter (Inch) 3/16
Counterbore Material Solid Carbide
Standard Pilot Model Number Compatibility 185-4
Oversize Pilot Model Number Compatibility 186-4
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/64
Aircraft-Style No

$145.48

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Made in USA - 4 Flutes, 3/8" Diam, 3/16" Pilot Hole Diam, High Speed Steel Reverse Counterbore - A1 Tooling

Made in USA - 4 Flutes, 3/8" Diam, 3/16" Pilot Hole Diam, High Speed Steel Reverse Counterbore


Item #: 09937202
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials.
Product Specifications
Counterbore Diameter (Inch) 3/8
Pilot Hole Diameter (Inch) 3/16
Counterbore Material High Speed Steel
Standard Pilot Model Number Compatibility 185-4
Oversize Pilot Model Number Compatibility 186-4
Number of Flutes 4
Overall Length (Inch) 1/2
Corner Radius (Inch) 1/32
Aircraft-Style No

$33.32

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