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

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


Scientific Cutting Tools - 1-3/16 - 12" Port, 1.775" Spotface Diam, 7/8" Tube Outside Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 44065159
Brand: Scientific Cutting Tools
Model #: MS16142-14RC

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 Reamer
Port Thread Size (Decimal Inch) 1.1870-12
Port Thread Size (Inch) 1-3/16 - 12
Tool Material Carbide-Tipped
Tube Dash Number 14.000
Tube Outside Diameter Compatibility (Decimal Inch) 0.875
Tube Outside Diameter Compatibility (Inch) 7/8
Minimum Pilot Diameter (Decimal Inch) 1.1040
Maximum Pilot Diameter (Decimal Inch) 1.2755
Spotface Diameter (Decimal Inch) 1.7750
Pilot Length (Decimal Inch) 0.7790
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating TiN
Head Length (Decimal Inch) 1.9600
Overall Length (Decimal Inch) 4.2100
Shank Diameter (Decimal Inch) 1.0000
Shank Length (Decimal Inch) 2.2500
Seal Angle 15
Thread Type UN
Flute Type Straight
Number of Flutes 4

$275.17

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 - 1-5/16 - 12" Port, 1.93" Spotface Diam, 1" Tube Outside Diam, Reamer Pilot, Straight Shank, High Speed Steel Porting Tool


Item #: 00389841
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 MS 16142
Pilot Type Reamer
Port Thread Size (Inch) 1-5/16 - 12
Tool Material High Speed Steel
Tube Outside Diameter Compatibility (Inch) 1
Minimum Pilot Diameter (Decimal Inch) 1.2260
Spotface Diameter (Decimal Inch) 1.9300
ShankType Straight
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Overall Length (Inch) 4-9/32
Shank Diameter (Decimal Inch) 0.7500
Seal Angle 15
Thread Type Straight
Number of Flutes 4
Material Application Ferrous Metals; Non-Ferrous Metals

$496.03

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 - 9/16" Diam, 3 Flutes, Morse Taper Shank, Interchangeable Pilot Counterbore


Item #: 78810363
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) 9/16
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 Morse Taper
Aircraft-Style No
Shank Taper Designation 1MT
Overall Length (Inch) 4-5/16
Cutting Direction Forward
Material Application Cast Iron; Composites; Non-Ferrous Metals; Non-Metals; Plastics

$251.62

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 - 13/32" Diam, 3/8" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08790263
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) 13/32
Pilot Shank Diameter Compatibility (Inch) 5/32
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 3/8
Aircraft-Style No
Shank Length (Inch) 3-1/16
Overall Length (Inch) 4-1/16
Cutting Direction Forward

$54.81

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 - 2-1/2 - 12" Port, 3.49" Spotface Diam, 2" Tube Outside Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 00274878
Brand: Scientific Cutting Tools
Model #: MS16142-32R

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 Reamer
Port Thread Size (Decimal Inch) 2.5000-12
Port Thread Size (Inch) 2-1/2 - 12
Tool Material Carbide-Tipped
Tube Dash Number 32.000
Tube Outside Diameter Compatibility (Decimal Inch) 2.000
Tube Outside Diameter Compatibility (Inch) 2
Minimum Pilot Diameter (Decimal Inch) 2.4170
Maximum Pilot Diameter (Decimal Inch) 2.5895
Spotface Diameter (Decimal Inch) 3.4900
Pilot Length (Decimal Inch) 0.7770
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Head Length (Decimal Inch) 2.6500
Overall Length (Decimal Inch) 5.1500
Shank Diameter (Decimal Inch) 1.2500
Shank Length (Decimal Inch) 2.5000
Seal Angle 15
Thread Type UN
Flute Type Straight
Number of Flutes 4

$586.32

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 - 1-13/16" Diam, 5 Flutes, Morse Taper Shank, Interchangeable Pilot Counterbore


Item #: 08781528
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) 1-13/16
Pilot Shank Diameter Compatibility (Inch) 7/16
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 5
Shank Type Morse Taper
Aircraft-Style No
Shank Taper Designation 4MT
Overall Length (Inch) 8-1/8
Cutting Direction Forward

$337.51

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 - 1-1/2" Diam, 1-1/4" Shank, Diam, 5 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08791329
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) 1-1/2
Pilot Shank Diameter Compatibility (Inch) 3/8
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 5
Shank Type Straight
Shank Diameter (Inch) 1-1/4
Aircraft-Style No
Shank Length (Inch) 5-7/8
Overall Length (Inch) 7-7/8
Cutting Direction Forward

$224.96

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 - M33x2.0mm Port, 1.6969" Spotface Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 44037786
Brand: Scientific Cutting Tools
Model #: 6149-M33X2.0A

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 ISO 6149-1; SAE J2244-1
Pilot Type Reamer
Port Thread Size (mm) M33x2.0
Tool Material Carbide-Tipped
Minimum Pilot Diameter (mm) 31.000
Minimum Pilot Diameter (Decimal Inch) 1.2205
Maximum Pilot Diameter (Decimal Inch) 1.3957
Spotface Diameter (Decimal Inch) 1.6969
Spotface Diameter (mm) 43.10
Pilot Length (Decimal Inch) 0.7402
Identification Groove No
Finish/Coating AlTiN+
Head Length (Decimal Inch) 2.0000
Overall Length (Decimal Inch) 4.2500
Shank Diameter (Decimal Inch) 1.0000
Shank Length (Decimal Inch) 2.2500
Seal Angle 15
Thread Type Metric Fine
Flute Type Straight
Number of Flutes 4

$273.90

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 - 3/8" Diam, 5/16" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 78800240
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) 3/8
Pilot Shank Diameter Compatibility (Inch) 5/32
Finish/Coating Bright
Counterbore Material Carbide-Tipped
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 5/16
Aircraft-Style No
Overall Length (Inch) 4-1/16
Cutting Direction Forward
Material Application Cast Iron; Composites; Non-Ferrous Metals; Non-Metals; Plastics

$171.37

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


Item #: 66386509
Brand: Union Butterfield
Model #: 6210051

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) 7/8
Counterbore Diameter (Decimal Inch) 0.8750
Pilot Shank Diameter Compatibility (Inch) 1/4
Pilot Shank Diameter Compatibility (Decimal Inch) 0.2500
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 3/4
Shank Diameter (Decimal Inch) 0.7500
Aircraft-Style No
Overall Length (Decimal Inch) 5.3750
Overall Length (Inch) 5-3/8
Flute Length (Decimal Inch) 1.50
Flute Length (Inch) 1-1/2
Cutting Direction Forward
Material Application Alloy Steel; Brass; Bronze; Carbon Steel; Cast Iron; Copper; Copper Alloys; Free Machining Stainless Steel; Hardened Steel; Nickel; Nickel Alloys; Stainless Steel; Steel; Structural Steel; Titanium; Titanium Alloys

$227.25

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 - 27/32" Diam, 3/4" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08815540
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) 27/32
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) 3/4
Aircraft-Style No
Shank Length (Inch) 3-7/8
Overall Length (Inch) 5-3/8
Cutting Direction Forward

$129.27

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 - 3/8-24" Port, 0.805" Spotface Diam, 3/16" Tube Outside Diam, Plain Pilot, Straight Shank, High Speed Steel Porting Tool


Item #: 00389270
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) 3/8-24
Tool Material High Speed Steel
Tube Outside Diameter Compatibility (Inch) 3/16
Minimum Pilot Diameter (Decimal Inch) 0.3320 (AND Spec); 0.3380 (MS Spec)
Spotface Diameter (Decimal Inch) 0.8050
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 3
Material Application Abrasive Materials; Ferrous Metals; Non-Ferrous Metals

$269.01

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 - 3/8-24" Port, 0.805" Spotface Diam, 3/16" Tube Outside Diam, Reamer Pilot, Straight Shank, High Speed Steel Porting Tool


Item #: 00389452
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) 3/8-24
Tool Material High Speed Steel
Tube Outside Diameter Compatibility (Inch) 3/16
Minimum Pilot Diameter (Decimal Inch) 0.3330 (AND Spec); 0.3390 (MS Spec)
Spotface Diameter (Decimal Inch) 0.8050
ShankType Straight
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Overall Length (Inch) 3-19/32
Shank Diameter (Decimal Inch) 0.5000
Thread Type Straight
Number of Flutes 3
Material Application Abrasive Materials; Ferrous Metals; Non-Ferrous Metals

$287.28

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, 3/4" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08790644
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) 5/16
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 3/4
Aircraft-Style No
Shank Length (Inch) 4-5/8
Overall Length (Inch) 6-3/8
Cutting Direction Forward

$90.50

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 - 3/16" Diam, 15/64" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 08790123
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) 3/16
Pilot Shank Diameter Compatibility (Inch) 3/32
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 15/64
Aircraft-Style No
Shank Length (Inch) 2-3/8
Overall Length (Inch) 3
Cutting Direction Forward

$54.81

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 - 5/16" Diam, 1/4" Shank, Diam, 4 Flutes, Straight Shank, Interchangeable Pilot Counterbore


Item #: 71010201
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 Shank Diameter Compatibility (Inch) 3/32
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) 2-3/8
Flute Length (Inch) 1/2
Cutting Direction Forward

$47.69

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


Item #: 71387559
Brand: Union Butterfield
Model #: 6210047

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
Counterbore Diameter (Decimal Inch) 0.7500
Pilot Shank Diameter Compatibility (Inch) 1/4
Pilot Shank Diameter Compatibility (Decimal Inch) 0.2500
Finish/Coating Bright
Counterbore Material High Speed Steel
Number of Flutes 3
Shank Type Straight
Shank Diameter (Inch) 1/2
Shank Diameter (Decimal Inch) 0.5000
Aircraft-Style No
Overall Length (Decimal Inch) 5.3750
Overall Length (Inch) 5-3/8
Flute Length (Decimal Inch) 1.50
Flute Length (Inch) 1-1/2
Cutting Direction Forward
Material Application Alloy Steel; Brass; Bronze; Carbon Steel; Cast Iron; Copper; Copper Alloys; Free Machining Stainless Steel; Hardened Steel; Nickel; Nickel Alloys; Stainless Steel; Steel; Structural Steel; Titanium; Titanium Alloys

$208.62

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 - 2-1/4 - 12" Port, 3.05" Spotface Diam, 1-3/4" Tube Outside Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 44042349
Brand: Scientific Cutting Tools
Model #: AND10050-28RA

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
Pilot Type Reamer
Port Thread Size (Decimal Inch) 2.2500-12
Port Thread Size (Inch) 2-1/4 - 12
Tool Material Carbide-Tipped
Tube Dash Number 28.000
Tube Outside Diameter Compatibility (Decimal Inch) 1.750
Tube Outside Diameter Compatibility (Inch) 1-3/4
Minimum Pilot Diameter (Decimal Inch) 2.1630
Maximum Pilot Diameter (Decimal Inch) 2.2755
Spotface Diameter (Decimal Inch) 3.0500
Pilot Length (Decimal Inch) 1.1270
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating AlTiN+
Head Length (Decimal Inch) 2.4200
Overall Length (Decimal Inch) 4.9200
Shank Diameter (Decimal Inch) 1.2500
Shank Length (Decimal Inch) 2.5000
Seal Angle 30
Thread Type UN
Flute Type Straight
Number of Flutes 4

$478.90

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 - 1/4" Port, 15/16" Spotface Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 44064467
Brand: Scientific Cutting Tools
Model #: PT-BSPP-1/4A

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) 0.2500
Port Thread Size (Inch) 1/4
Tool Material Carbide-Tipped
Minimum Pilot Diameter (Decimal Inch) 0.4590
Maximum Pilot Diameter (Decimal Inch) 0.5330
Spotface Diameter (Decimal Inch) 0.9380
Pilot Length (Decimal Inch) 0.6830
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

$187.96

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 - 1.0620-12" Port, 1.3" Spotface Diam, 3/4" Tube Outside Diam, Reamer Pilot, Carbide Tipped Porting Tool


Item #: 44075380
Brand: Scientific Cutting Tools
Model #: MS21921-12

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 21921
Pilot Type Reamer
Port Thread Size (Decimal Inch) 1.0620-12
Tool Material Carbide-Tipped
Tube Dash Number 12.000
Tube Outside Diameter Compatibility (Decimal Inch) 0.750
Minimum Pilot Diameter (Decimal Inch) 0.8280
Maximum Pilot Diameter (Decimal Inch) 1.3000
Spotface Diameter (Decimal Inch) 1.3000
Pilot Length (Decimal Inch) 0.3530
Identification Groove No
Workpiece Compatibility Tubes
Finish/Coating Bright
Head Length (Decimal Inch) 1.8700
Overall Length (Decimal Inch) 4.0000
Shank Diameter (Decimal Inch) 0.7500
Shank Length (Decimal Inch) 2.1300
Thread Type UNJF
Flute Type Straight
Number of Flutes 4

$265.71

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

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