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

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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Made in USA - #5 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Made in USA - #5 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08272676
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) 0.2050
Fastener Size Compatibility (Wire) #5
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 3/16
Number of Flutes 4
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1250
Shank Type Straight
Overall Length (Inch) 4-1/8
Cutting Direction Forward

$40.16

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Keo - 4mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 4mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 44850824
Brand: Keo
Model #: 56207

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) 8.00
Fastener Size Compatibility (mm) 4.00
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (mm) 5.00
Number of Flutes 3
Pilot Diameter (mm) 4.30
Overall Length (mm) 71.00

$55.14

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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 #: 02828556
Brand: Keo
Model #: 55218

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) 0.4750
Fastener Size Compatibility (Inch) 5/16
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 3/8
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.3120
Shank Type Straight
Overall Length (Inch) 4-1/2
Cutting Direction Forward

$63.87

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Value Collection - #6 Wire Fillister Head Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Value Collection - #6 Wire Fillister Head Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08860066
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) 0.2410
Fastener Size Compatibility (Wire) #6
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) 0.1370
Shank Type Straight
Overall Length (Inch) 2-5/8
Cutting Direction Forward

$20.99

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Keo - #5 Wire Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - #5 Wire Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828408
Brand: Keo
Model #: 55203

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) 0.2050
Fastener Size Compatibility (Wire) #5
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 3/16
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1250
Shank Type Straight
Overall Length (Inch) 3
Cutting Direction Forward

$50.30

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Value Collection - 7/8" Head Diam, 3/8" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 7/8" Head Diam, 3/8" Shank Diam, Counterbore Pilot


Item #: 08907560
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 7/8
Shank Diameter (Inch) 3/8
Pilot Material Carbon Steel

$23.06

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Made in USA - 5/16" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Made in USA - 5/16" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08272833
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) 0.4910
Fastener Size Compatibility (Inch) 5/16
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 3/8
Number of Flutes 4
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.3280
Shank Type Straight
Overall Length (Inch) 6-1/8
Cutting Direction Forward

$57.96

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Value Collection - 3/4" Head Diam, 7/16" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 3/4" Head Diam, 7/16" Shank Diam, Counterbore Pilot


Item #: 08908485
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 3/4
Shank Diameter (Inch) 7/16
Pilot Material Carbon Steel

$17.09

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Keo - 3mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 3mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 44850881
Brand: Keo
Model #: 56202

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) 6.00
Fastener Size Compatibility (mm) 3.00
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (mm) 5.00
Number of Flutes 3
Pilot Diameter (mm) 3.40
Overall Length (mm) 71.00

$46.67

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Value Collection - 5/8" Compatible High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Value Collection - 5/8" Compatible High Speed Steel, Solid Pilot Counterbore


Item #: 08862401
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
Counterbore Diameter (Inch) 31/32
Fastener Size Compatibility (Inch) 5/8
Counterbore Material High Speed Steel
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 3/4
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Inch) 21/32
Shank Type Straight
Cutting Direction Forward

$77.87

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Keo - 7/16" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 7/16" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828622
Brand: Keo
Model #: 55225

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) 0.6790
Fastener Size Compatibility (Inch) 7/16
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Oversize
Shank Diameter (Inch) 1/2
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.4520
Shank Type Straight
Overall Length (Inch) 5
Cutting Direction Forward

$86.50

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Keo - 1/4" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 1/4" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828523
Brand: Keo
Model #: 55215

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) 0.3820
Fastener Size Compatibility (Inch) 1/4
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 5/16
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.2500
Shank Type Straight
Overall Length (Inch) 4-1/2
Cutting Direction Forward

$60.57

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Keo - 5mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 5mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 44850782
Brand: Keo
Model #: 56211

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) 10.00
Fastener Size Compatibility (mm) 5.00
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (mm) 8.00
Number of Flutes 3
Pilot Diameter (mm) 5.50
Overall Length (mm) 80.00

$58.60

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Value Collection - 9/16" Head Diam, 5/16" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 9/16" Head Diam, 5/16" Shank Diam, Counterbore Pilot


Item #: 08906364
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 9/16
Shank Diameter (Inch) 5/16
Pilot Material Carbon Steel

$15.30

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