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Best Counterbores - Buying Guide

Last Updated: 04/20/2019

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Bestselling Counterbores on Amazon

  1. AccusizeTools - H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 508S-0007
  2. 9/16" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flut...
  3. Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series
  4. AccusizeTools - 7 Pcs Inch Premium HSS 6542 Solid Capscrew Counterbore Set 3 Flute Straight Shank, 5...
  5. #8 X 11/64" HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0008)
  6. AccusizeTools - Metric H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 5...
  7. 1/4 X 9/32 HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0016)
  8. 5/8" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel
  9. HHIP 2007-0021 21 Piece HSS Interchangeable Pilot Counterbore Set
  10. 3/4" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel

  #1

AccusizeTools - H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 508S-0007

Model: 508S-0007   |    Mpn: 508S-0007   |    Ean: 0641799805317   |    PartNumber: 508S-0007   |   Asin: B00RY558JM

High Speed Steel Straight Shank Item #508S-0007 Inch Set (7 PC) : 6#, 8#, 10#, 1/4'', 5/16'', 3/8'', 1/2''

Features

  • High Speed Steel
  • Straight Shank
  • Inch Set (7 PC) : 6#, 8#, 10#, 1/4'', 5/16'', 3/8'', 1/2''
  • See more on Amazon...

Brand: Accusize Industrial Tools   |   Manufacturer: Accusize Co., Ltd.

Item Dimensions: 12.2 x 9.45 x 2.76 inches (31.0 x 24.0 x 7.0 cm)   |   Package Dimensions: 2.4 x 7.1 x 8.3 inches (6.1 x 18.0 x 21.1 cm)

Amazon Price: $59.00 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $59.00

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  #2

9/16" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flutes, 2 3/4" OAL, (.5625" Diameter), 52218, USA Made

Model: 52218   |    Mpn: 52218   |    PartNumber: 52218   |   Asin: B00PM4NVUK

9/16" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flutes, 2 3/4" OAL, (.5625" Diameter), 52218, USA Made

Features

  • For counterboring and spotfacing in applications where machine requires a smaller shank
  • 1/64 Corner Radius, Tool Diameter Tolerance: +.001/-0. Shank Diameter Tolerance: +0/-.001
  • Pilot Hole Diameter:1/8, If using a pilot this is the shank diameter of the pilot you should choose
  • Minimum Cut Diameter: .156 Because there is a pilot hole the tool will not cut below this diameter.
  • Set screw to hold a pilot or drill bit in place (if you are using a pilot or drill bit)
  • See more on Amazon...

Brand: Super Tool   |   Manufacturer: Super Tool

Item Dimensions: 0.56 x 0.56 x 2.75 inches (1.4 x 1.4 x 7.0 cm)   |   Package Dimensions: 0.71 x 0.87 x 3.94 inches (1.8 x 2.2 x 10.0 cm)

Amazon Price: $66.20 | as of 04/20/2019(3:46pm pst)
Availibility:
List Price: $66.20

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  #3

Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series

Model: DEWA/CCBR1/4   |    Mpn: DEWA/CCBR1/4   |    Ean: 0887861128636   |    PartNumber: DEWA/CCBR1/4   |   Asin: B01H5G3FVM

Drill America qualtech decor series aircraft counter bore. Counter boring is the enlargement of a portion of a hole that has previously been formed. If the counter bored portion is shallow (1/inches or less), the operation is usually known as spot-facing; for example, a flat Seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counter boring. This counter bore is made of two-piece construction, having an integral shank and counter bore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Round shanks allow use with a wide variety of tool holding systems.

Features

  • Aircraft counter bore
  • High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • Round shanks allow use with a wide variety of tool holding systems
  • Counter boring is the enlargement of a portion of a hole that has previously been formed
  • The counter bore is a two-piece construction, having an integral shank and counter bore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool
  • See more on Amazon...

Brand: Drill America   |   Manufacturer: Drill America

Package Dimensions: 0.5 x 0.6 x 3.8 inches (1.3 x 1.5 x 9.7 cm)

Amazon Price: $14.72 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $14.72

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  #4

#8 X 11/64" HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0008)

Model: 2007-0008   |    Mpn: 2007-0008   |    Ean: 0769053007090   |    PartNumber: 2007-0008   |   Asin: B00N40F3EQ

Continuous pilot counterbores cut rapidly, smoothly and accurately, producing long spiraling chips rather than small metal particles The pilot extends the full Length of the flute portion of the tool As cutter flutes are Ground back due to wear, a new section of pilot becomes exposed The pilot head may be cut off to any desired Length when repeated sharpening make it too long for practical use Continuous pilot counterbores have a life many times that of the conventional type counterbore.

Features

Brand: HHIP   |   Manufacturer: HHIP

Item Dimensions: 2 x 4 x 2 inches (5.1 x 10.2 x 5.1 cm)   |   Package Dimensions: 0.67 x 1.85 x 3.9 inches (1.7 x 4.7 x 9.9 cm)

First Available: 2017-05-15

Amazon Price: $10.60 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $10.60

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  #5

1/4 X 9/32 HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0016)

Model: 2007-0016   |    Mpn: 2007-0016   |    Ean: 0769053007113   |    PartNumber: 2007-0016   |   Asin: B00N40FBL6

1/4 X 9/32" High Speed Steel 3 Flute Solid Pilot Counterbore ~ Cutter diameter is 13/32". ~ Shank diameter is 3/8". ~ Overall length is 3". ~ Continuous pilot counterbores cut rapidly, smoothly and accurately, producing long spiraling chips rather than small metal particles. ~ The pilot extends the full length of the flute portion of the tool. ~ As cutter flutes are ground back due to wear, a new section of pilot becomes exposed. ~ The pilot head may be cut off to any desired length when repeated sharpening makes it too long for practical use. ~ Continuous pilot counterbores have a life many times that of the conventional type counterbore. ~ Cap Screw is 1/4". ~ Pilot Diameter is 9/32".

Features

Brand: HHIP   |   Manufacturer: HHIP

Item Dimensions: 2 x 4 x 2 inches (5.1 x 10.2 x 5.1 cm)   |   Package Dimensions: 0.5 x 0.6 x 4.8 inches (1.3 x 1.5 x 12.2 cm)

Amazon Price: $7.71 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $8.62

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  #6

5/8" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel

 PartNumber: CBSS-5/8   |   Asin: B00OTX2RAU

High Speed Steel. Interchangeable Pilot Type Straight Shank Counterbore. PLEASE NOTE: The photograph shows a Straight Shank Interchangeable Pilot Counterbore, but not necessarily this specific diameter or shank.

Features

  • Diameter: 5/8"
  • Length: 5-1/8
  • Shank Diameter: 1/2
  • Pilot Hole Diameter: 3/16
  • Range of Pilot Sizes: 1/4- 9/16
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Brand: Counterbores - Int Pilot   |   Manufacturer: Counterbores - Int Pilot

Amazon Price: $23.25 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $23.25

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  #7

HHIP 2007-0021 21 Piece HSS Interchangeable Pilot Counterbore Set

Model: 2007-0021   |    Mpn: 2007-0021   |    Ean: 0769053007137   |    PartNumber: 2007-0021   |   Asin: B00N40FDD2

21 Piece High Speed Steel Interchangeable Pilot Counterbore Set ~ Supplied in a fitted case. ~ 14 pilots with a 5/32" shank including 0.187, 0.204, 0.213, 0.229, 1/4, 17/64, 9/32, 5/16, 21/64, 11/32, 3/8, 25/64, 13/32 and 7/16. ~ 6 counterbores including 5/16, 3/8, 7/16, 1/2, 9/16 and 5/8. ~ 1 Holder with a 3/8" shank. ~ Straight shank.

Features

  • 21 PIECE HSS INTERCHANGEABLE PILOT COUNTER Bore SET; 14 Pilots: 5/32" Shank : 0.187, 0.204, 0.213, 0.229, 1/4, 17/64, 9/32, 5/16, 21/64, 11/32, 3/8,
  • 25/64, 13/32 & 7/16; 6 Counterbores: 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, Straight Shank
  • 1 Holder: 3/8 Shank , Supplied in fitted case
  • Straight Shank; High speed steel
  • See more on Amazon...

Brand: HHIP   |   Manufacturer: ABS Import Tools Inc.

Item Dimensions: 3 x 6 x 3 inches (7.6 x 15.2 x 7.6 cm)   |   Package Dimensions: 3.1 x 3.6 x 7.1 inches (7.9 x 9.1 x 18.0 cm)

First Available: 2017-11-25

Amazon Price: $101.21 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $101.21

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  #8

3/4" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel

 PartNumber: CBSS-3/4   |   Asin: B00OTX2WKK

High Speed Steel. Interchangeable Pilot Type Straight Shank Counterbore. PLEASE NOTE: The photograph shows a Straight Shank Interchangeable Pilot Counterbore, but not necessarily this specific diameter or shank.

Features

  • Diameter: 3/4"
  • Length: 5-3/8
  • Shank Diameter: 1/2
  • Pilot Hole Diameter: 1/4
  • Range of Pilot Sizes: 5/16- 11/16
  • See more on Amazon...

Brand: Counterbores - Int Pilot   |   Manufacturer: Counterbores - Int Pilot

Amazon Price: $27.05 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $27.05

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  #9

Drill America 5/16" X 3/32" Pilot Hole High Speed Steel Straight Shank Counterbore, Dew Series

Model: DEWCBR5/16   |    Mpn: DEWCBR5/16   |    Ean: 0887861128971   |    PartNumber: DEWCBR5/16   |   Asin: B01H5G3Q5C

Drill America qualtech decor series aircraft counter bore. Counter boring is the enlargement of a portion of a hole that has previously been formed. If the counter bored portion is shallow (1/inches or less), the operation is usually known as spot-facing; for example, a flat Seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counter boring. This counter bore is made of two-piece construction, having an integral shank and counter bore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Round shanks allow use with a wide variety of tool holding systems.

Features

  • Counter bore
  • High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • Round shanks allow use with a wide variety of tool holding systems
  • Counter boring is the enlargement of a portion of a hole that has previously been formed
  • The counter bore is a two-piece construction, having an integral shank and counter bore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool
  • See more on Amazon...

Brand: Drill America   |   Manufacturer: Drill America

Package Dimensions: 0.59 x 0.67 x 3.86 inches (1.5 x 1.7 x 9.8 cm)

First Available: 2017-05-15

Amazon Price: $19.16 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $23.27

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  #10

3mm Metric Capscrew Counterbore, High Speed Steel

 PartNumber: CBCS-M3   |   Asin: B00OTX8XZS

For Metric Socket Head Cap Screws. Usually has 3 flutes, but may have 4 flutes .

Features

  • Screw Size: 3mm
  • Pilot Diameter: 3.4mm
  • Cutter Diameter: 6mm
  • Shank Diameter: 0.2185
  • High speed steel, for metric socket cap screws.
  • See more on Amazon...

Brand: Counterbores - Solid   |   Manufacturer: Counterbores - Solid

Amazon Price: $10.40 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $10.40

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  #11

Cleveland C46900 0.6875" HSS, Short Aircraft Type Interchangeable Pilot Counterbore, Uncoated (Bright) Finish (Pack qty. 1)

 Ean: 0697334469001   |    PartNumber: C46900   |   Asin: B01HBUVSZ2

High Speed Steel Aircraft Type Counterbores, designed for aircraft fabrication use with portable pneumatic and electric drills. Smaller pilot holes than standard counterbores. Corner radius 1/32" is standard.

Features

  • HSS Short Aircraft Type Counterbore
  • Pilot Hole Diameter: 0.1875
  • Overall Length: 2.813
  • Flute Length: 0.5
  • Shank Size: 0.25
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Brand: Cleveland   |   Manufacturer: Greenfield Industries

Amazon Price: $51.70 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $51.70

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  #12

5/16" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel

 PartNumber: CBSS-5/16   |   Asin: B00OTX2FZC

High Speed Steel. Interchangeable Pilot Type Straight Shank Counterbore. PLEASE NOTE: The photograph shows a Straight Shank Interchangeable Pilot Counterbore, but not necessarily this specific diameter or shank.

Features

  • Diameter: 5/16"
  • Length: 3-13/16
  • Shank Diameter: 19/64
  • Pilot Hole Diameter: 3/32
  • Range of Pilot Sizes: 1/8- 1/4
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Brand: Counterbores - Int Pilot   |   Manufacturer: Counterbores - Int Pilot

Amazon Price: $17.85 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $17.85

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  #13

1/2" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flutes, 2 3/4" OAL, (.5" Diameter), 52216, USA Made

Model: 52216   |    Mpn: 52216   |    PartNumber: 52216   |   Asin: B00PM444EW

1/2" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flutes, 2 3/4" OAL, (.5" Diameter), 52216, USA Made

Features

  • For counterboring and spotfacing in applications where machine requires a smaller shank
  • 1/64 Corner Radius, Tool Diameter Tolerance: +.001/-0. Shank Diameter Tolerance: +0/-.001
  • Pilot Hole Diameter:1/8, If using a pilot this is the shank diameter of the pilot you should choose
  • Minimum Cut Diameter: .156 Because there is a pilot hole the tool will not cut below this diameter.
  • Set screw to hold a pilot or drill bit in place (if you are using a pilot or drill bit)
  • See more on Amazon...

Brand: Super Tool   |   Manufacturer: Super Tool

Item Dimensions: 0.5 x 0.5 x 2.75 inches (1.3 x 1.3 x 7.0 cm)   |   Package Dimensions: 0.71 x 0.87 x 3.94 inches (1.8 x 2.2 x 10.0 cm)

Amazon Price: $65.60 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $61.90

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  #14

HHIP 2007-0064 High-Speed Steel 3 Flute Straight Shank Solid Pilot Counterbore, M10 x 11mm

Model: 2007-0064   |    Mpn: 2007-0064   |    Ean: 0769053091143   |    PartNumber: 2007-0064   |   Asin: B01I5PFSP8

HHIP 3 Flute straight shank solid pilot counter bore is made of high speed steel. Cap screw is M10. Cutter diameter is 18.0mm. Shank diameter is 12.5mm. Overall length is 100mm. Pilot diameter is 11.0mm. Continuous pilot counter bores cut rapidly, smoothly and accurately, producing long spiraling chips rather than small metal particles. The pilot extends the full length of the flute portion of the tool. As cutter flutes are ground back due to wear, a new section of pilot becomes exposed. The pilot head may be cut off to any desired length when repeated sharpening makes it too long for practical use. Continuous pilot counter bores have a life many times that of the conventional type counter bore.

Features

  • Made of high speed steel
  • Cap screw is M10
  • Cutter diameter is 18.0mm
  • Shank diameter is 12.5mm
  • Overall length is 100mm
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Brand: HHIP   |   Manufacturer: HHIP

Item Dimensions: 6 x 6 x 6 inches (15.2 x 15.2 x 15.2 cm)   |   Package Dimensions: 1 x 1 x 4 inches (2.5 x 2.5 x 10.2 cm)

First Available: 2017-05-08

Amazon Price: $23.00 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $23.00

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  #15

Drill America 1/2" X 1/8" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series

Model: DEWA/CCBR1/2   |    Mpn: DEWA/CCBR1/2   |    Ean: 0887861128711   |    PartNumber: DEWA/CCBR1/2   |   Asin: B01H5G3DR8

Drill America qualtech decor series aircraft counter bore. Counter boring is the enlargement of a portion of a hole that has previously been formed. If the counter bored portion is shallow (1/inches or less), the operation is usually known as spot-facing; for example, a flat Seat for a bolt head or nut. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counter boring. This counter bore is made of two-piece construction, having an integral shank and counter bore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Round shanks allow use with a wide variety of tool holding systems.

Features

  • Aircraft counter bore
  • High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • Round shanks allow use with a wide variety of tool holding systems
  • Counter boring is the enlargement of a portion of a hole that has previously been formed
  • The counter bore is a two-piece construction, having an integral shank and counter bore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool
  • See more on Amazon...

Brand: Drill America   |   Manufacturer: Drill America

Package Dimensions: 0.12 x 0.71 x 3.11 inches (0.3 x 1.8 x 7.9 cm)

Amazon Price: $13.89 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $14.62

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  #16

AccusizeTools - 39 Pcs/Set HSS Interchangeable Pilot Counterbore Set, 500S-A000

Model: 500S-A000   |    Mpn: 500S-A000   |    Ean: 0641799805218   |    PartNumber: 500S-A000   |   Asin: B00I3OWB3Y

The 13 pcs interchange counterbore and their correspondent pilot chart:
Counterbore Size: 1/4''; Pilot Hole Size: 3/32"; Range of Pilot Sizes: 1/8"-3/16"; Shank for Counterbore:15/64"; Overall Length: 3-13/16" Counterbore Size: 5/16''; Pilot Hole Size: 3/32"; Range of Pilot Sizes: 1/8"-1/4"; Shank for Counterbore:19/64"; Overall Length: 3-13/16" Counterbore Size: 3/8''; Pilot Hole Size: 5/32"; Range of Pilot Sizes: 3/16''-5/16"; Shank for Counterbore:5/16"; Overall Length: 4-1/16" Counterbore Size: 7/16''; Pilot Hole Size: 5/32"; Range of Pilot Sizes: 3/16''-3/8"; Shank for Counterbore:3/8"; Overall Length: 4-1/16" Counterbore Size: 1/2''; Pilot Hole Size: 3/16"; Range of Pilot Sizes: 1/4-7/16"; Shank for Counterbore:7/16"; Overall Length: 4-5/16" Counterbore Size: 9/16''; Pilot Hole Size: 3/16"; Range of Pilot Sizes: 1/4"-1/2"; Shank for Counterbore:7/16"; Overall Length: 4-5/16" Counterbore Size: 5/8''; Pilot Hole Size: 3/16"; Range of Pilot Sizes: 1/4"-9/16"; Shank for Counterbore:1/2"; Overall Length: 5-1/8" Counterbore Size: 11/16''; Pilot Hole Size: 3/16"; Range of Pilot Sizes: 1/4"-5/8"; Shank for Counterbore:1/2"; Overall Length: 5-1/8" Counterbore Size: 3/4''; Pilot Hole Size: 1/4"; Range of Pilot Sizes: 5/16''-11/16''; Shank for Counterbore:1/2"; Overall Length: 5-3/8" Counterbore Size: 13/16''; Pilot Hole Size: 1/4"; Range of Pilot Sizes: 5/16''-3/4''; Shank for Counterbore:5/8"; Overall Length: 5-3/8" Counterbore Size: 7/8''; Pilot Hole Size: 1/4"; Range of Pilot Sizes: 5/16''-13/16''; Shank for Counterbore:3/4"; Overall Length: 5-3/8" Counterbore Size: 15/16''; Pilot Hole Size: 1/4"; Range of Pilot Sizes: 5/16''-7/8''; Shank for Counterbore:3/4"; Overall Length: 6-1/8" Counterbore Size: 1''; Pilot Hole Size: 5/16"; Range of Pilot Sizes: 3/8'-15/16''; Shank for Counterbore:3/4"; Overall Length: 6-3/8"

Features

  • Complete with pilots in fitted case
  • Each set includes:13 counterbores-26 pilots
  • Counterbores: 1/4 to 1 by 16ths
  • Soild wood excellent packing
  • Straight shank
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Brand: Accusize Industrial Tools   |   Manufacturer: Accusize Co., Ltd.

Item Dimensions: 12.2 x 3.54 x 18.5 inches (31.0 x 9.0 x 47.0 cm)   |   Package Dimensions: 3.11 x 9.21 x 14.88 inches (7.9 x 23.4 x 37.8 cm)

Amazon Price: $236.00 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 24 hours
List Price: $236.00

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  #17

7 Piece HIGH Speed Steel 3 Flute Solid Pilot Counterbore Set (2007-0002)

Model: 2007-0002   |    Mpn: 2007-0002   |    Ean: 0769053007076   |    PartNumber: 2007-0002   |   Asin: B00N40EZVI

Continuous pilot counterbores cut rapidly, smoothly and accurately, producing long spiraling chips rather than small metal particles The pilot extends the full Length of the flute portion of the tool As cutter flutes are Ground back due to wear, a new section of pilot becomes exposed The pilot head may be cut off to any desired Length when repeated sharpening make it too long for practical use Continuous pilot counterbores have a life many times that of the conventional type counterbore.

Features

  • Continuous pilot counterbores cut rapidly, smoothly and accurately, producing long spiraling chips rather than small metal particles.
  • Includes the #6, #8, #10, 1/4, 5/16, 3/8, & 1/2 sizes. The pilot extends the full length of the flute portion of the tool.
  • As cutter flutes are ground back due to wear, a new section of pilot becomes exposed.
  • The pilot head may be cut off to any desired length when repeated sharpening makes it too long for practical use.
  • Continuous pilot counterbores have a life many times that of the conventional type counterbore.
  • See more on Amazon...

Brand: HHIP   |   Manufacturer: HHIP

Item Dimensions: 3 x 6 x 3 inches (7.6 x 15.2 x 7.6 cm)   |   Package Dimensions: 1.8 x 6.7 x 9.7 inches (4.6 x 17.0 x 24.6 cm)

Amazon Price: $21.88 | as of 04/20/2019(3:46pm pst)
Availibility: Usually ships in 3-4 business days
List Price: $21.88

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  1. AccusizeTools - H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 508S-000...
  2. 9/16" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flut...
  3. Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series
  4. #8 X 11/64" HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0008)
  5. 1/4 X 9/32 HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0016)
  6. 5/8" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel
  7. HHIP 2007-0021 21 Piece HSS Interchangeable Pilot Counterbore Set
  8. 3/4" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel

Most Gifted

  1. AccusizeTools - H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 508S-000...
  2. 9/16" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flut...
  3. Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series
  4. #8 X 11/64" HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0008)
  5. 1/4 X 9/32 HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0016)
  6. 5/8" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel
  7. HHIP 2007-0021 21 Piece HSS Interchangeable Pilot Counterbore Set
  8. 3/4" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel

Top Selling

  1. AccusizeTools - H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 508S-000...
  2. 9/16" Aircraft Counterbore, Carbide Tipped, (Reduced Shank Counterbore), 1/4" Shank Diameter, 3 Flut...
  3. Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series
  4. #8 X 11/64" HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0008)
  5. 1/4 X 9/32 HIGH Speed Steel 3 Flute Solid Pilot Counterbore (2007-0016)
  6. 5/8" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel
  7. HHIP 2007-0021 21 Piece HSS Interchangeable Pilot Counterbore Set
  8. 3/4" Straight Shank Counterbore, Interchangeable Pilot Type, High Speed Steel



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