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

APT - 5/8" Fastener Compatible, 3/16" Blade Thickness Compatibility, 21/32" Pilot Hole Diam, 5/8" Shank Diam, Straight Shank, Blade Type Counterbore Holder - A1 Tooling

APT - 5/8" Fastener Compatible, 3/16" Blade Thickness Compatibility, 21/32" Pilot Hole Diam, 5/8" Shank Diam, Straight Shank, Blade Type Counterbore Holder


Item #: 08863409
Brand: APT
Model #: DH20

Features and Benefits

Straight shanks are used for general purpose applications. The shank is smaller than the drill bit diameter. They are used with portable drills and drill presses on ferrous and non-ferrous materials.
Product Specifications
Fastener Type Compatibility Socket-Head Cap Screw
Fastener Size Compatibility (Inch) 5/8
Blade Thickness Compatibility (Inch) 3/16
Shank Type Straight
Pilot Hole Diameter (Inch) 21/32
Shank Diameter (Inch) 5/8
Holder Length (Inch) 7-1/2
Holder Material High Speed Steel
PSC Code 5133

$115.16

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Made in USA - 1/8" Head Diam, 1/8" Shank Diam, Counterbore Pilot - A1 Tooling

Made in USA - 1/8" Head Diam, 1/8" Shank Diam, Counterbore Pilot


Item #: 78902087
Brand: Made in USA
Model #:

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

$10.65

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Keo - 3.5mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 3.5mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 44850857
Brand: Keo
Model #: 56204

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) 6.50
Fastener Size Compatibility (mm) 3.50
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (mm) 5.00
Number of Flutes 3
Pilot Diameter (mm) 3.70
Overall Length (mm) 71.00

$52.28

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Union Butterfield - 11/16" Head Diam, 3/8" Shank Diam, Counterbore Pilot - A1 Tooling

Union Butterfield - 11/16" Head Diam, 3/8" Shank Diam, Counterbore Pilot


Item #: 65707333
Brand: Union Butterfield
Model #: 3210159

Product Specifications
Head Diameter (Inch) 11/16
Shank Diameter (Inch) 3/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$81.76

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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 #: 02828747
Brand: Keo
Model #: 55237

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) 1.5620
Fastener Size Compatibility (Inch) 1
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 1
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 1.0160
Shank Type Straight
Overall Length (Inch) 7
Cutting Direction Forward

$427.37

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Made in USA - 9/16" Head Diam, 1/4" Shank Diam, Counterbore Pilot - A1 Tooling

Made in USA - 9/16" Head Diam, 1/4" Shank Diam, Counterbore Pilot


Item #: 78905361
Brand: Made in USA
Model #:

Product Specifications
Head Diameter (Inch) 9/16
Shank Diameter (Inch) 1/4
Finish/Coating Bright
Aircraft-Style No
Pilot Material Carbon Steel

$31.59

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

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


Item #: 81852287
Brand: Cleveland
Model #: C92706

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) 7/16
Fastener Size Compatibility (Inch) 5/16
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 7/16
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Inch) 5/16
Shank Type Straight
Overall Length (mm) 152.40
Overall Length (Inch) 6
Overall Length (Decimal Inch) 6.00
Cutting Direction Forward
Material Application Alloy Tool Steel; Carbon Steel; Cast Iron

$116.98

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Alvord Polk - 1/4" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Alvord Polk - 1/4" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 43983600
Brand: Alvord Polk
Model #: 03017

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
Fastener Size Compatibility (Decimal Inch) 0.2500
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Oversize
Shank Diameter (Decimal Inch) 0.3125
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.2810
Shank Type Straight
Overall Length (Inch) 5-5/8
Overall Length (Decimal Inch) 5.63
Cutting Direction Forward

$43.07

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Keo - 8mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 8mm Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 44850733
Brand: Keo
Model #: 56215

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) 15.00
Fastener Size Compatibility (mm) 8.00
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (mm) 12.50
Number of Flutes 3
Pilot Diameter (mm) 6.80
Overall Length (mm) 100.00

$65.35

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Cleveland - 1/4" Head Diam, 1/4" Shank Diam, Counterbore Pilot - A1 Tooling

Cleveland - 1/4" Head Diam, 1/4" Shank Diam, Counterbore Pilot


Item #: 63677405
Brand: Cleveland
Model #: C46557

Product Specifications
Head Diameter (Inch) 1/4
Shank Diameter (Inch) 1/4
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

$29.17

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Value Collection - 1/4 to 1/2" Fillister Head Screw Compatible, High Speed Steel, Solid Pilot Counterbore Set - A1 Tooling

Value Collection - 1/4 to 1/2" Fillister Head Screw Compatible, High Speed Steel, Solid Pilot Counterbore Set


Item #: 08860017
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.
Straight shanks are used for general purpose applications. The shank is smaller than the drill bit diameter. They are used with portable drills and drill presses on ferrous and non-ferrous materials.
Product Specifications
Fastener Type Compatibility Fillister-Head Screw
Minimum Fastener Size Compatibility (Inch) 1/4
Maximum Fastener Size Compatibility (Inch) 1/2
Number of Flutes 2
Counterbore Material High Speed Steel
Fastener Size Compatibility (Inch) 1/4; 5/16; 3/8; 1/2
Number of Pieces 4
Shank Type Straight
Cutting Direction Forward
Storage Unit Type Pouch
Storage Unit Material Plastic
Aircraft-Style No

$154.75

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

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


Item #: 65707036
Brand: Union Butterfield
Model #: 3210124

Product Specifications
Head Diameter (Inch) 3/8
Shank Diameter (Inch) 5/32
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$47.68

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Made in USA - 1/2" Head Diam, 1/4" Shank Diam, Counterbore Pilot - A1 Tooling

Made in USA - 1/2" Head Diam, 1/4" Shank Diam, Counterbore Pilot


Item #: 78905320
Brand: Made in USA
Model #:

Product Specifications
Head Diameter (Inch) 1/2
Shank Diameter (Inch) 1/4
Finish/Coating Bright
Aircraft-Style No
Pilot Material Carbon Steel

$16.48

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Value Collection - 11/32" Head Diam, 1/8" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 11/32" Head Diam, 1/8" Shank Diam, Counterbore Pilot


Item #: 08902223
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 11/32
Shank Diameter (Inch) 1/8
Pilot Material Carbon Steel

$10.48

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Value Collection - 1/2" Compatible High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Value Collection - 1/2" Compatible High Speed Steel, Solid Pilot Counterbore


Item #: 08862328
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) 25/32
Fastener Size Compatibility (Inch) 1/2
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) 17/32
Shank Type Straight
Cutting Direction Forward

$61.17

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Cleveland - #8 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Cleveland - #8 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 81852063
Brand: Cleveland
Model #: C91697

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) 0.2740
Fastener Size Compatibility (Wire) #8
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 1/4
Shank Diameter (mm) 6.35
Shank Diameter (Decimal Inch) 0.2500
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1610
Shank Type Straight
Overall Length (mm) 76.20
Overall Length (Inch) 3
Overall Length (Decimal Inch) 3.00
Cutting Direction Forward
Material Application Alloy Tool Steel; Carbon Steel; Cast Iron

$113.14

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Value Collection - 3/16" Head Diam, 5/32" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 3/16" Head Diam, 5/32" Shank Diam, Counterbore Pilot


Item #: 08903122
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 3/16
Shank Diameter (Inch) 5/32
Pilot Material Carbon Steel

$8.65

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Value Collection - 5/8" Head Diam, 3/16" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 5/8" Head Diam, 3/16" Shank Diam, Counterbore Pilot


Item #: 08904401
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 5/8
Shank Diameter (Inch) 3/16
Pilot Material Carbon Steel

$16.95

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Keo - #8 Wire Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - #8 Wire Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828481
Brand: Keo
Model #: 55211

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) 0.3040
Fastener Size Compatibility (Wire) #8
Counterbore Material Cobalt
Finish/Coating Bright
Standard or Oversize Pilot Oversize
Shank Diameter (Inch) 1/4
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1950
Shank Type Straight
Overall Length (Inch) 3
Cutting Direction Forward

$56.91

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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 #: 02828572
Brand: Keo
Model #: 55220

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) 0.5070
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) 0.3430
Shank Type Straight
Overall Length (Inch) 4-1/2
Cutting Direction Forward

$63.87

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