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

Union Butterfield - 1/8" Head Diam, 1/8" Shank Diam, Counterbore Pilot - A1 Tooling

Union Butterfield - 1/8" Head Diam, 1/8" Shank Diam, Counterbore Pilot


Item #: 65707366
Brand: Union Butterfield
Model #: 3210249

Product Specifications
Head Diameter (Inch) 1/8
Shank Diameter (Inch) 1/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$43.11

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Keo - 5/16" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 5/16" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828564
Brand: Keo
Model #: 55219

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Decimal Inch) 0.4910
Fastener Size Compatibility (Inch) 5/16
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Oversize
Shank Diameter (Inch) 3/8
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.3280
Shank Type Straight
Overall Length (Inch) 4-1/2
Cutting Direction Forward

$63.87

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Union Butterfield - 7/32" Head Diam, 1/8" Shank Diam, Counterbore Pilot - A1 Tooling

Union Butterfield - 7/32" Head Diam, 1/8" Shank Diam, Counterbore Pilot


Item #: 66386863
Brand: Union Butterfield
Model #: 3210258

Product Specifications
Head Diameter (Inch) 7/32
Shank Diameter (Inch) 1/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$40.45

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Cleveland - 13/32" Head Diam, 3/16" Shank Diam, Counterbore Pilot - A1 Tooling

Cleveland - 13/32" Head Diam, 3/16" Shank Diam, Counterbore Pilot


Item #: 63677298
Brand: Cleveland
Model #: C46592

Product Specifications
Head Diameter (Inch) 13/32
Shank Diameter (Inch) 3/16
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel
Material Application Alloy Tool Steel; Aluminum; Cast Iron; Low Carbon Steel; Medium Carbon Steel

$32.62

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Made in USA - 1/4" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Made in USA - 1/4" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08272817
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.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Decimal Inch) 0.4140
Fastener Size Compatibility (Inch) 1/4
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 5/16
Number of Flutes 4
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.2810
Shank Type Straight
Overall Length (Inch) 5-5/8
Cutting Direction Forward

$46.91

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Made in USA - 7/16" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Made in USA - 7/16" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08272908
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.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Decimal Inch) 0.6950
Fastener Size Compatibility (Inch) 7/16
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 1/2
Number of Flutes 4
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.4680
Shank Type Straight
Overall Length (Inch) 7
Cutting Direction Forward

$76.58

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Made in USA - 5/8" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Made in USA - 5/8" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08272940
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.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Decimal Inch) 0.9610
Fastener Size Compatibility (Inch) 5/8
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 5/8
Number of Flutes 4
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.6410
Shank Type Straight
Overall Length (Inch) 7-5/8
Cutting Direction Forward

$147.99

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Keo - 1" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 1" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828754
Brand: Keo
Model #: 55238

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Decimal Inch) 1.5880
Fastener Size Compatibility (Inch) 1
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Oversize
Shank Diameter (Inch) 1
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 1.0320
Shank Type Straight
Overall Length (Inch) 7
Cutting Direction Forward

$427.37

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Keo - 12mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 12mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 44850667
Brand: Keo
Model #: 56222

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (mm) 20.00
Fastener Size Compatibility (mm) 12.00
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (mm) 12.50
Number of Flutes 3
Pilot Diameter (mm) 13.00
Overall Length (mm) 100.00

$89.46

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Made in USA - 9/16" Head Diam, 3/8" Shank Diam, Counterbore Pilot - A1 Tooling

Made in USA - 9/16" Head Diam, 3/8" Shank Diam, Counterbore Pilot


Item #: 78907367
Brand: Made in USA
Model #:

Product Specifications
Head Diameter (Inch) 9/16
Shank Diameter (Inch) 3/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material Carbon Steel

$23.47

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Cleveland - 3/8" Head Diam, 5/32" Shank Diam, Counterbore Pilot - A1 Tooling

Cleveland - 3/8" Head Diam, 5/32" Shank Diam, Counterbore Pilot


Item #: 63677173
Brand: Cleveland
Model #: C46584

Product Specifications
Head Diameter (Inch) 3/8
Shank Diameter (Inch) 5/32
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel
Material Application Alloy Tool Steel; Aluminum; Cast Iron; Low Carbon Steel; Medium Carbon Steel

$28.46

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Cleveland - 3/8" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Cleveland - 3/8" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 81852386
Brand: Cleveland
Model #: C91714

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.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Inch) 19/32
Fastener Size Compatibility (Inch) 3/8
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 1/2
Shank Diameter (mm) 12.70
Shank Diameter (Decimal Inch) 0.5000
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Inch) 13/32
Shank Type Straight
Overall Length (mm) 165.10
Overall Length (Inch) 6-1/2
Overall Length (Decimal Inch) 6.50
Cutting Direction Forward
Material Application Alloy Tool Steel; Carbon Steel; Cast Iron

$135.28

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Value Collection - 9/32" Head Diam, 3/32" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 9/32" Head Diam, 3/32" Shank Diam, Counterbore Pilot


Item #: 08901183
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 9/32
Shank Diameter (Inch) 3/32
Pilot Material Carbon Steel

$10.21

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Keo - #6 Wire Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - #6 Wire Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828432
Brand: Keo
Model #: 55206

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Decimal Inch) 0.2280
Fastener Size Compatibility (Wire) #6
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 7/32
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1380
Shank Type Straight
Overall Length (Inch) 3
Cutting Direction Forward

$55.48

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Value Collection - #4 Wire Fillister Head Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Value Collection - #4 Wire Fillister Head Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08860041
Brand: Value Collection
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
Fastener Type Compatibility Fillister-Head Screw
Counterbore Diameter (Decimal Inch) 0.1980
Fastener Size Compatibility (Wire) #4
Counterbore Material High Speed Steel
Standard or Oversize Pilot Standard
Shank Diameter (Decimal Inch) 0.2500
Number of Flutes 2
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1110
Shank Type Straight
Overall Length (Inch) 2-5/8
Cutting Direction Forward

$16.49

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Union Butterfield - 1/8" Head Diam, 3/32" Shank Diam, Counterbore Pilot - A1 Tooling

Union Butterfield - 1/8" Head Diam, 3/32" Shank Diam, Counterbore Pilot


Item #: 57278566
Brand: Union Butterfield
Model #: 3210114

Product Specifications
Head Diameter (Inch) 1/8
Shank Diameter (Inch) 3/32
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$43.11

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Union Butterfield - 3/8" Head Diam, 1/8" Shank Diam, Counterbore Pilot - A1 Tooling

Union Butterfield - 3/8" Head Diam, 1/8" Shank Diam, Counterbore Pilot


Item #: 65707051
Brand: Union Butterfield
Model #: 3210263

Product Specifications
Head Diameter (Inch) 3/8
Shank Diameter (Inch) 1/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$47.68

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Union Butterfield - 1/4" Head Diam, 3/32" Shank Diam, Counterbore Pilot - A1 Tooling

Union Butterfield - 1/4" Head Diam, 3/32" Shank Diam, Counterbore Pilot


Item #: 65707374
Brand: Union Butterfield
Model #: 3210118

Product Specifications
Head Diameter (Inch) 1/4
Shank Diameter (Inch) 3/32
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$40.45

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Cleveland - 3/8" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Cleveland - 3/8" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 81852378
Brand: Cleveland
Model #: C91713

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.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (Inch) 37/64
Fastener Size Compatibility (Inch) 3/8
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 1/2
Shank Diameter (mm) 12.70
Shank Diameter (Decimal Inch) 0.5000
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Inch) 25/64
Shank Type Straight
Overall Length (mm) 165.10
Overall Length (Inch) 6-1/2
Overall Length (Decimal Inch) 6.50
Cutting Direction Forward
Material Application Alloy Tool Steel; Carbon Steel; Cast Iron

$143.36

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Keo - 10mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 10mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 44850691
Brand: Keo
Model #: 56219

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Counterbore Diameter (mm) 18.00
Fastener Size Compatibility (mm) 10.00
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (mm) 12.50
Number of Flutes 3
Pilot Diameter (mm) 10.50
Overall Length (mm) 100.00

$74.86

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