Email: sales@a1tooling.com | Phone: (888) 988-8820
We ship from multiple warehouses throughout the USA
to get you what you need as fast as possible!
Millions of items in stock!
Fast online checkout - No account required
Cart 0
Cart 0

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

Interstate - 14mm Compatible High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Interstate - 14mm Compatible High Speed Steel, Solid Pilot Counterbore


Item #: 45403466
Brand: Interstate
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 (mm) 24.00
Fastener Size Compatibility (mm) 14.00
Counterbore Material High Speed Steel
Number of Flutes 3
Pilot Diameter (mm) 15.00
Shank Type Morse Taper
Shank Taper Designation 2MT
Overall Length (Inch) 8-1/4
Cutting Direction Forward

$68.12

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 3/4" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Made in USA - 3/4" Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08272981
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) 1.1650
Fastener Size Compatibility (Inch) 3/4
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 3/4
Number of Flutes 4
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.7810
Shank Type Straight
Overall Length (Inch) 7-3/4
Cutting Direction Forward

$166.40

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

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 #: 08272882
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) 0.6630
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) 0.4370
Shank Type Straight
Overall Length (Inch) 7
Cutting Direction Forward

$76.58

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Value Collection - 1/2" Head Diam, 5/16" Shank Diam, Counterbore Pilot - A1 Tooling

Value Collection - 1/2" Head Diam, 5/16" Shank Diam, Counterbore Pilot


Item #: 08906323
Brand: Value Collection
Model #:

Product Specifications
Head Diameter (Inch) 1/2
Shank Diameter (Inch) 5/16
Pilot Material Carbon Steel

$10.59

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Interstate - 3/8" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Interstate - 3/8" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 45403359
Brand: Interstate
Model #:

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 (Inch) 19/32
Fastener Size Compatibility (Inch) 3/8
Counterbore Material Cobalt
Finish/Coating Bright
Shank Diameter (Inch) 1/2
Number of Flutes 3
Pilot Diameter (Inch) 13/32
Shank Type Straight
Overall Length (Inch) 4-1/2
Cutting Direction Forward

$60.32

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Union Butterfield - 13/16" Head Diam, 3/8" Shank Diam, Counterbore Pilot - A1 Tooling

Union Butterfield - 13/16" Head Diam, 3/8" Shank Diam, Counterbore Pilot


Item #: 66386731
Brand: Union Butterfield
Model #: 3210161

Product Specifications
Head Diameter (Inch) 13/16
Shank Diameter (Inch) 3/8
Finish/Coating Bright
Aircraft-Style No
Pilot Material High Speed Steel

$104.40

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - #6 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Made in USA - #6 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 08272700
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) 0.2280
Fastener Size Compatibility (Wire) #6
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 7/32
Number of Flutes 4
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1380
Shank Type Straight
Overall Length (Inch) 4-5/8
Cutting Direction Forward

$42.39

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Keo - 3/8" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore - A1 Tooling

Keo - 3/8" Socket Head Cap Screw Compatible, Cobalt, Solid Pilot Counterbore


Item #: 02828598
Brand: Keo
Model #: 55222

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) 0.5880
Fastener Size Compatibility (Inch) 3/8
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) 0.3900
Shank Type Straight
Overall Length (Inch) 5
Cutting Direction Forward

$72.37

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Cleveland - #6 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore - A1 Tooling

Cleveland - #6 Wire Socket Head Cap Screw Compatible, High Speed Steel, Solid Pilot Counterbore


Item #: 81852022
Brand: Cleveland
Model #: C91695

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) 0.2300
Fastener Size Compatibility (Wire) #6
Counterbore Material High Speed Steel
Finish/Coating Bright
Standard or Oversize Pilot Standard
Shank Diameter (Inch) 7/32
Number of Flutes 3
Aircraft-Style No
Pilot Diameter (Decimal Inch) 0.1350
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

$94.21

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Value Collection - 1" Diam, 1/4" Shank, Diam, 4 Flutes, Straight Shank, Interchangeable Pilot Counterbore - A1 Tooling

Value Collection - 1" Diam, 1/4" Shank, Diam, 4 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08840647
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) 1
Pilot Shank Diameter Compatibility (Inch) 3/16
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 4
Shank Type Straight
Shank Diameter (Inch) 1/4
Aircraft-Style Yes
Overall Length (Inch) 3-1/8
Cutting Direction Forward

$114.72

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 3/4" Diam, 1/2" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore - A1 Tooling

Made in USA - 3/4" Diam, 1/2" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08812489
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 Shank Diameter Compatibility (Inch) 1/4
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 1/2
Shank Length (Inch) 3-7/8
Overall Length (Inch) 5-3/8
Cutting Direction Forward

$110.13

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 1/2-20" Port, 0.95" Spotface Diam, 5/16" Tube Outside Diam, Plain Pilot, Straight Shank, High Speed Steel Porting Tool - A1 Tooling

Made in USA - 1/2-20" Port, 0.95" Spotface Diam, 5/16" Tube Outside Diam, Plain Pilot, Straight Shank, High Speed Steel Porting Tool


Item #: 00389296
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials.
Product Specifications
Port Standard Designation AND 10050; MS 33649
Pilot Type Plain
Port Thread Size (Inch) 1/2-20
Tool Material High Speed Steel
Tube Outside Diameter Compatibility (Inch) 5/16
Minimum Pilot Diameter (Decimal Inch) 0.4480 (AND Spec); 0.4540 (MS Spec)
Spotface Diameter (Decimal Inch) 0.9500
ShankType Straight
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Overall Length (Inch) 3-17/32
Shank Diameter (Inch) 1/2
Shank Diameter (Decimal Inch) 0.5000
Thread Type Straight
Number of Flutes 4
Material Application Abrasive Materials; Ferrous Metals; Non-Ferrous Metals

$281.33

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Scientific Cutting Tools - 1/8" Port, 23/32" Spotface Diam, Reamer Pilot, Carbide Tipped Porting Tool - A1 Tooling

Scientific Cutting Tools - 1/8" Port, 23/32" Spotface Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 44076073
Brand: Scientific Cutting Tools
Model #: PT-BSPP-1/8A

Features and Benefits

Carbide-tipped cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Pilot Type Reamer
Port Thread Size (Decimal Inch) 0.1250
Port Thread Size (Inch) 1/8
Tool Material Carbide-Tipped
Minimum Pilot Diameter (Decimal Inch) 0.3450
Maximum Pilot Diameter (Decimal Inch) 0.3980
Spotface Diameter (Decimal Inch) 0.7190
Pilot Length (Decimal Inch) 0.5650
Identification Groove No
Finish/Coating AlTiN+
Head Length (Decimal Inch) 1.6200
Overall Length (Decimal Inch) 3.6200
Shank Diameter (Decimal Inch) 0.5000
Shank Length (Decimal Inch) 2.0000
Seal Angle 45
Thread Type BSPP
Flute Type Straight
Number of Flutes 3

$170.38

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 7/8" Diam, 3/4" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore - A1 Tooling

Made in USA - 7/8" Diam, 3/4" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 78803566
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) 7/8
Pilot Shank Diameter Compatibility (Inch) 1/4
Pilot Shank Diameter Compatibility (Decimal Inch) 0.2500
Finish/Coating Bright
Counterbore Material Carbide-Tipped
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 3/4
Aircraft-Style No
Overall Length (Inch) 5-3/8
Cutting Direction Forward
Material Application Steel

$251.91

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 3/4-16" Port, 1.24" Spotface Diam, 1/2" Tube Outside Diam, Reamer Pilot, Straight Shank, High Speed Steel Porting Tool - A1 Tooling

Made in USA - 3/4-16" Port, 1.24" Spotface Diam, 1/2" Tube Outside Diam, Reamer Pilot, Straight Shank, High Speed Steel Porting Tool


Item #: 00389502
Brand: Made in USA
Model #:

Features and Benefits

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials.
Product Specifications
Port Standard Designation AND 10050; MS 33649
Pilot Type Reamer
Port Thread Size (Inch) 3/4-16
Tool Material High Speed Steel
Tube Outside Diameter Compatibility (Inch) 1/2
Minimum Pilot Diameter (Decimal Inch) 0.6870 (AND Spec); 0.6930 (MS Spec)
Spotface Diameter (Decimal Inch) 1.2400
ShankType Straight
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Overall Length (Inch) 3-15/16
Shank Diameter (Decimal Inch) 0.5000
Thread Type Straight
Number of Flutes 4
Material Application Abrasive Materials; Ferrous Metals; Non-Ferrous Metals

$323.49

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 7/16-20" Port, 0.888" Spotface Diam, 1/4" Tube Outside Diam, Plain Pilot, Straight Shank, Carbide Tipped Porting Tool - A1 Tooling

Made in USA - 7/16-20" Port, 0.888" Spotface Diam, 1/4" Tube Outside Diam, Plain Pilot, Straight Shank, Carbide Tipped Porting Tool


Item #: 00389908
Brand: Made in USA
Model #:

Features and Benefits

Carbide-tipped cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Port Standard Designation AND 10050; MS 33649
Pilot Type Plain
Port Thread Size (Inch) 7/16-20
Tool Material Carbide-Tipped
Tube Outside Diameter Compatibility (Inch) 1/4
Minimum Pilot Diameter (Decimal Inch) 0.3850 (AND Spec); 0.3920 (MS Spec)
Spotface Diameter (Decimal Inch) 0.8880
ShankType Straight
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Overall Length (Inch) 3-15/32
Shank Diameter (Inch) 1/2
Shank Diameter (Decimal Inch) 0.5000
Thread Type Straight
Number of Flutes 4

$334.56

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Made in USA - 5/8" Diam, 1/2" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore - A1 Tooling

Made in USA - 5/8" Diam, 1/2" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 78800406
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) 5/8
Pilot Shank Diameter Compatibility (Inch) 3/16
Pilot Shank Diameter Compatibility (Decimal Inch) 0.1875
Finish/Coating Bright
Counterbore Material Carbide-Tipped
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 1/2
Aircraft-Style No
Overall Length (Inch) 5-1/8
Cutting Direction Forward
Material Application Cast Iron; Composites; Non-Ferrous Metals; Non-Metals; Plastics

$206.16

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Scientific Cutting Tools - 1-1/8 - 18" Port, 1.428" Spotface Diam, 1" Tube Outside Diam, Reamer Pilot, Carbide Tipped Porting Tool - A1 Tooling

Scientific Cutting Tools - 1-1/8 - 18" Port, 1.428" Spotface Diam, 1" Tube Outside Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 82983321
Brand: Scientific Cutting Tools
Model #: RPT-16

Features and Benefits

Carbide-tipped cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Pilot Type Reamer
Port Thread Size (Decimal Inch) 1.1250-18
Port Thread Size (Inch) 1-1/8 - 18
Tool Material Carbide-Tipped
Tube Dash Number 16.000
Tube Outside Diameter Compatibility (Decimal Inch) 1.000
Tube Outside Diameter Compatibility (Inch) 1
Minimum Pilot Diameter (Decimal Inch) 1.0730
Maximum Pilot Diameter (Decimal Inch) 1.1630
Spotface Diameter (Decimal Inch) 1.4280
Pilot Length (Decimal Inch) 0.6695
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Head Length (Decimal Inch) 2.2600
Overall Length (Decimal Inch) 4.2600
Shank Diameter (Decimal Inch) 0.7500
Shank Length (Decimal Inch) 2.0000
Seal Angle 21
Thread Type UNJEF
Flute Type Straight
Number of Flutes 4

$250.71

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Value Collection - 1-1/4" Diam, 1" Shank, Diam, 5 Flutes, Straight Shank, Interchangeable Pilot Counterbore - A1 Tooling

Value Collection - 1-1/4" Diam, 1" Shank, Diam, 5 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08816167
Brand: Value Collection
Model #:

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Product Specifications
Counterbore Diameter (Inch) 1-1/4
Pilot Shank Diameter Compatibility (Inch) 3/8
Finish/Coating Bright
Counterbore Material Cobalt
Number of Flutes 5
Shank Type Straight
Shank Diameter (Inch) 1
Aircraft-Style No
Shank Length (Inch) 4-5/8
Overall Length (Inch) 6-5/8
Cutting Direction Forward

$255.63

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It

Scientific Cutting Tools - 3/4-16" Port, 1.198" Spotface Diam, 1/2" Tube Outside Diam, Plain Pilot, Carbide Tipped Porting Tool - A1 Tooling

Scientific Cutting Tools - 3/4-16" Port, 1.198" Spotface Diam, 1/2" Tube Outside Diam, Plain Pilot, Carbide Tipped Porting Tool


Item #: 00274670
Brand: Scientific Cutting Tools
Model #: MS16142-8S

Features and Benefits

Carbide-tipped cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys.
Product Specifications
Port Standard Designation MS 16142; SAE J1926; SAE J514
Pilot Type Plain
Port Thread Size (Decimal Inch) 0.7500-16
Port Thread Size (Inch) 3/4-16
Tool Material Carbide-Tipped
Tube Dash Number 8.000
Tube Outside Diameter Compatibility (Decimal Inch) 0.500
Tube Outside Diameter Compatibility (Inch) 1/2
Minimum Pilot Diameter (Decimal Inch) 0.6850
Maximum Pilot Diameter (Decimal Inch) 0.8135
Spotface Diameter (Decimal Inch) 1.1980
Pilot Length (Decimal Inch) 0.4520
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Head Length (Decimal Inch) 1.4500
Overall Length (Decimal Inch) 3.5700
Shank Diameter (Decimal Inch) 0.7500
Shank Length (Decimal Inch) 2.1200
Seal Angle 15
Thread Type UNF
Flute Type Straight
Number of Flutes 4

$207.62

2% Off All Online Orders
Use Code: 2%OFF

Best Price Guarantee - Email Us A Better Published Price and We'll Beat It