Counterbores

When it comes to creating perfectly countersunk holes in your woodworking projects, counterbores are an essential tool to have in your arsenal. These versatile tools are designed to drill a pilot hole for the screw and then create a larger, flat-bottomed hole to accommodate the screw head. This ensures that the screw sits flush with the surface, giving your project a professional and polished finish. Counterbores come in a variety of sizes to suit different screw sizes and can be used with a drill press or a hand drill. They are typically made from high-speed steel or carbide for durability and precision. Whether you're working on a simple DIY project or a more complex woodworking endeavor, having a quality counterbore in your toolbox will make the job faster and easier. Investing in a high-quality counterbore will not only save you time and effort, but it will also ensure that your projects look professional and well-crafted. So why not add a counterbore to your collection of woodworking tools today? Browse our selection and find the perfect counterbore for your needs.
SEMCO (1 PIECE) .110 X .059 X 2-1/2 OAL M-7 2 FL. COUNTERBORE
SEMCO (1 PIECE) .110 X .059 X 2-1/2 OAL M-7 2 FL. COUNTERBORE Ebay.com starting at $4.00

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mountaindrills

Rating: 98.8%

YANKEE 1/2” PILOTED COUNTERBORE USA HSS
YANKEE 1/2” PILOTED COUNTERBORE USA HSS Ebay.com starting at $20.00

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mountaindrills

Rating: 98.8%

3/32" Diameter Carbide Flat Bottom Counterbore, 3/8" LOC. Harvey Tool #25493-C3
3/32" Diameter Carbide Flat Bottom Counterbore, 3/8" LOC. Harvey Tool #25493-C3 Ebay.com starting at $50.73

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Suncoast Precision Tools

Rating: 100.0%

7/16 Cb .452 Plt .675 Flute Diameter Solid HSS Counterbore
7/16 Cb .452 Plt .675 Flute Diameter Solid HSS Counterbore Ebay.com starting at $17.03

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Suncoast Precision Tools

Rating: 100.0%

1PC M3-M16 HSS Counterbore End Mill Pilot Slotting Tool Nano Blue Coated 4 Flute
1PC M3-M16 HSS Counterbore End Mill Pilot Slotting Tool Nano Blue Coated 4 Flute Ebay.com starting at $16.55

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PTcolletion

Rating: 100.0%

6 sets New 5298564 Shim -Liner .020 Counterbore Shim fits Cummins ISX 1997-2015
6 sets New 5298564 Shim -Liner .020 Counterbore Shim fits Cummins ISX 1997-2015 Ebay.com starting at $189.99

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Gladdeal_ysy

Rating: 98.7%

ATI 3/4" AT488C-17 Counterbore Aircraft Interchangeable Pilot 4 Flute Bit Cutter
ATI 3/4" AT488C-17 Counterbore Aircraft Interchangeable Pilot 4 Flute Bit Cutter Ebay.com starting at $29.75

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marknmandee

Rating: 99.9%

ATI 3/8" AT488C-5 Counterbore Aircraft Interchangeable Pilot 4 Flute Bit Shank
ATI 3/8" AT488C-5 Counterbore Aircraft Interchangeable Pilot 4 Flute Bit Shank Ebay.com starting at $27.20

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marknmandee

Rating: 99.9%

#10 National Spline Taper Counterbore Tool Holder: Morse Taper #2 Shank MT2 2MT
#10 National Spline Taper Counterbore Tool Holder: Morse Taper #2 Shank MT2 2MT Ebay.com starting at $20.00

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steelcoasttradingcompany

Rating: 100.0%

Whitney Tool P3128 Counterbore Pilot, 5/16" Pilot Hole, 1/4" Shank, 2-3/16" OAL
Whitney Tool P3128 Counterbore Pilot, 5/16" Pilot Hole, 1/4" Shank, 2-3/16" OAL Ebay.com starting at $15.99

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S&S INDUSTRIAL SURPLUS

Rating: 99.8%

1/2"  2-FLUTE CARBIDE TIPPED COUNTERBORE  10MM SHANK 2-3/4" OVERALL LENGTH
1/2" 2-FLUTE CARBIDE TIPPED COUNTERBORE 10MM SHANK 2-3/4" OVERALL LENGTH Ebay.com starting at $20.00

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david010913

Rating: 100.0%

Eclipse 424.1180 Back Spotfacer Arbor: 3/4" Pilot, Morse Taper #2 Shank MT2 2MT
Eclipse 424.1180 Back Spotfacer Arbor: 3/4" Pilot, Morse Taper #2 Shank MT2 2MT Ebay.com starting at $27.00

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steelcoasttradingcompany

Rating: 100.0%

101-9100 1" 90 Degree Counterbore: 1/4" Pilot Hole 9/16" #1 Pin Drive Shank Used
101-9100 1" 90 Degree Counterbore: 1/4" Pilot Hole 9/16" #1 Pin Drive Shank Used Ebay.com starting at $18.00

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steelcoasttradingcompany

Rating: 100.0%

D-M-E Company CB-21 , 5/16" Counterbore Bit
D-M-E Company CB-21 , 5/16" Counterbore Bit Ebay.com starting at $50.00

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CemPhoto WorkShop LLC

Rating: 99.6%

13/16" Pilot Dia 1/2" Shank HSS Straight Counterbore Pilot
13/16" Pilot Dia 1/2" Shank HSS Straight Counterbore Pilot Ebay.com starting at $30.00

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608scorpio159

Rating: 99.5%

Kent-Moore / Time-Sert J-42385-207 M8 X 1.25 Counterbore Tool
Kent-Moore / Time-Sert J-42385-207 M8 X 1.25 Counterbore Tool Ebay.com starting at $57.40

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j2toolandsupply

Rating: 99.8%

counterbore 6mm and 1/4". 2 flute. 13/32 x 1/4 Weldon
counterbore 6mm and 1/4". 2 flute. 13/32 x 1/4 Weldon Ebay.com starting at $19.00

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7 Cleveland 1-3/16 15/16 25/32 13/16 Counterbore Aircraft Interchangeable HS Bit
7 Cleveland 1-3/16 15/16 25/32 13/16 Counterbore Aircraft Interchangeable HS Bit Ebay.com starting at $71.40

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marknmandee

Rating: 99.9%

ATI 21/32" AT488C-14 Counterbore Aircraft Interchangeable Pilot 4 Flute Bit
ATI 21/32" AT488C-14 Counterbore Aircraft Interchangeable Pilot 4 Flute Bit Ebay.com starting at $29.75

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marknmandee

Rating: 99.9%

5 Cleveland 5/16" X 3/32" HSS Interchangeable Counterbore Pilot Head
5 Cleveland 5/16" X 3/32" HSS Interchangeable Counterbore Pilot Head Ebay.com starting at $32.30

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marknmandee

Rating: 99.9%

.290" Cobalt Counterbore with .197" NC Pilot MF0300147
.290" Cobalt Counterbore with .197" NC Pilot MF0300147 Ebay.com starting at $19.41

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Machinists Friend 4

Rating: 100.0%

.1015"  Cobalt Counterbore with .040" NC Pilot MF03001410
.1015" Cobalt Counterbore with .040" NC Pilot MF03001410 Ebay.com starting at $18.34

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Machinists Friend 4

Rating: 100.0%

11/16" (.6875") 4-Flute HSS Reverse Spotfacer Radius .025" MF0400412
11/16" (.6875") 4-Flute HSS Reverse Spotfacer Radius .025" MF0400412 Ebay.com starting at $20.03

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Machinists Friend 4

Rating: 100.0%

3/4" 4 Flute Carbide Reverse Spotfacer .031" Radius Craig 191-9L
3/4" 4 Flute Carbide Reverse Spotfacer .031" Radius Craig 191-9L Ebay.com starting at $74.17

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STSVS

Rating: 100.0%

5/8" (.625") 4 Flute HSS Reverse Spotfacer .031" Radius 190-7J
5/8" (.625") 4 Flute HSS Reverse Spotfacer .031" Radius 190-7J Ebay.com starting at $17.02

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STSVS

Rating: 100.0%

9/16" 4 Flute HSS Reverse Spotfacer .031" Radius 190-6L
9/16" 4 Flute HSS Reverse Spotfacer .031" Radius 190-6L Ebay.com starting at $18.41

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STSVS

Rating: 100.0%

10.70mm (.4213") 4-Flute Carbide Reverse Spotfacer Radius .025" MF0433327
10.70mm (.4213") 4-Flute Carbide Reverse Spotfacer Radius .025" MF0433327 Ebay.com starting at $41.77

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Machinists Friend 4

Rating: 100.0%

7/32" Interchangeable Counterbore Pilot 3/32" Shank MF12512068
7/32" Interchangeable Counterbore Pilot 3/32" Shank MF12512068 Ebay.com starting at $9.27

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Machinists Friend 4

Rating: 100.0%

7/32" Interchangeable Counterbore Pilot 5/64" Shank MF11172078
7/32" Interchangeable Counterbore Pilot 5/64" Shank MF11172078 Ebay.com starting at $9.27

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Machinists Friend 4

Rating: 100.0%

1-23/32" (43.66mm) HSS Morse 4 stepped drill counter bore stud 7/8" OL:15" FL:9"
1-23/32" (43.66mm) HSS Morse 4 stepped drill counter bore stud 7/8" OL:15" FL:9" Ebay.com starting at $36.57

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Toolingstation

Rating: 99.5%

Used 2-1/8" Counterbore, 5 Flutes, Altered Shank
Used 2-1/8" Counterbore, 5 Flutes, Altered Shank Ebay.com starting at $89.00

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Plourde's Tool Box Bargains

Rating: 100.0%

CNC Carbide Stepped Cutter  counter bore, TITEK TTK 11996 22.00mm. new
CNC Carbide Stepped Cutter counter bore, TITEK TTK 11996 22.00mm. new Ebay.com starting at $24.86

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Toolingstation

Rating: 99.5%

HSS Counterbore Counter bore Pilot Size 7/8", Group 4. shank OD 3/8", ESC
HSS Counterbore Counter bore Pilot Size 7/8", Group 4. shank OD 3/8", ESC Ebay.com starting at $8.77

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Toolingstation

Rating: 99.5%

HSS Counterbore Counter bore Pilot Size 1 1/4", Group 4. shank OD 3/8", ESC
HSS Counterbore Counter bore Pilot Size 1 1/4", Group 4. shank OD 3/8", ESC Ebay.com starting at $9.13

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Toolingstation

Rating: 99.5%

HSS Counterbore Counter bore Pilot Size 11/16", Group 4. shank OD 3/8", ESC
HSS Counterbore Counter bore Pilot Size 11/16", Group 4. shank OD 3/8", ESC Ebay.com starting at $9.04

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Toolingstation

Rating: 99.5%

NEW GREENFIELD INDUSTRIES CTT-68-60 COUNTERBORE BIT 1-1/16" X 1-9/16" EDP 91821
NEW GREENFIELD INDUSTRIES CTT-68-60 COUNTERBORE BIT 1-1/16" X 1-9/16" EDP 91821 Ebay.com starting at $55.95

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810.531.0356

Rating: 100.0%

Interstate #0879112 1-3/16" 3FL HSS Interchangeble Pilot Counterbore
Interstate #0879112 1-3/16" 3FL HSS Interchangeble Pilot Counterbore Ebay.com starting at $45.08

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Industry Recycles

Rating: 99.4%

Interstate Solid Pilot Counterbore 4 Pack HSS #4 Compatible .111" Pilot 08860041
Interstate Solid Pilot Counterbore 4 Pack HSS #4 Compatible .111" Pilot 08860041 Ebay.com starting at $22.05

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Industry Recycles

Rating: 99.4%

18.5mm HSS stub drill shank OD 19mm, with coolant bores. TITEK-PLUS
18.5mm HSS stub drill shank OD 19mm, with coolant bores. TITEK-PLUS Ebay.com starting at $19.01

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Toolingstation

Rating: 99.5%

 Clevland High Speed Steel Solid Pilot Counterbore  5/16" Socket Head C92706
Clevland High Speed Steel Solid Pilot Counterbore 5/16" Socket Head C92706 Ebay.com starting at $39.20

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Industry Recycles

Rating: 99.4%

WELDON Solid Pilot Counterbore Socket-Head Cap HSS 13/32" 2FL LGS8-1 (BN15)
WELDON Solid Pilot Counterbore Socket-Head Cap HSS 13/32" 2FL LGS8-1 (BN15) Ebay.com starting at $21.99

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werks1234

Rating: 99.4%

Cleveland 13/32" x 5/16" HSS Interchangeable Counterbore Pilot QTY 2 C46594
Cleveland 13/32" x 5/16" HSS Interchangeable Counterbore Pilot QTY 2 C46594 Ebay.com starting at $26.95

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Industry Recycles

Rating: 99.4%

1/2" Indexable Counterbore APT CB500 with TPGH21.51 Carbide Inserts
1/2" Indexable Counterbore APT CB500 with TPGH21.51 Carbide Inserts Ebay.com starting at $120.00

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25781 Morse 7/8" 3-FL HSS Taper Shank Interchangeable Pilot Counterbore (BN225)
25781 Morse 7/8" 3-FL HSS Taper Shank Interchangeable Pilot Counterbore (BN225) Ebay.com starting at $25.99

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werks1234

Rating: 99.4%

Granlund Size 0 counterbores & Pilots set OD M4-M12 ( missing M6 )
Granlund Size 0 counterbores & Pilots set OD M4-M12 ( missing M6 ) Ebay.com starting at $333.00

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Banyantec

Rating: 100.0%

MTS  Morse 4 Counter Sinker counterSIN, SIZE: 1-1/2" (38mm ) P&N
MTS Morse 4 Counter Sinker counterSIN, SIZE: 1-1/2" (38mm ) P&N Ebay.com starting at $17.46

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Toolingstation

Rating: 99.5%

MACHINIST TOOL LATHE MILL 3 Sharp Taper Shank Counterbore End Mills  DrG3
MACHINIST TOOL LATHE MILL 3 Sharp Taper Shank Counterbore End Mills DrG3 Ebay.com starting at $62.99

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gigigirl111

Rating: 99.4%

MORRIS WOOD TOOL 18mm x 10mm Adjustable Counterbore Style 5ACT RH Drill Bit
MORRIS WOOD TOOL 18mm x 10mm Adjustable Counterbore Style 5ACT RH Drill Bit Ebay.com starting at $23.00

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Camacetra

Rating: 99.5%

MORRIS WOOD TOOL 1in x 11/32in Adjustable Counterbore Style 5A RH Drill Bit
MORRIS WOOD TOOL 1in x 11/32in Adjustable Counterbore Style 5A RH Drill Bit Ebay.com starting at $25.00

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Camacetra

Rating: 99.5%

MORRIS WOOD TOOL 27/32in x #1 Adjustable Counterbore RH Drill Bit Set Screw
MORRIS WOOD TOOL 27/32in x #1 Adjustable Counterbore RH Drill Bit Set Screw Ebay.com starting at $17.00

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Camacetra

Rating: 99.5%

MORRIS WOOD TOOL 5/16in x 5/32in Adjustable Counterbore Style 5A RH Drill Bit
MORRIS WOOD TOOL 5/16in x 5/32in Adjustable Counterbore Style 5A RH Drill Bit Ebay.com starting at $13.00

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Camacetra

Rating: 99.5%

MACHINIST  LATHE MILL Machinist Lot of Counterbore Counter Bore End Mills  DrU1
MACHINIST LATHE MILL Machinist Lot of Counterbore Counter Bore End Mills DrU1 Ebay.com starting at $62.99

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gigigirl111

Rating: 99.4%

MACHINIST LATHE MILL Machinist Spot Facer Counterbore End Mill Cutter DrC
MACHINIST LATHE MILL Machinist Spot Facer Counterbore End Mill Cutter DrC Ebay.com starting at $26.99

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gigigirl111

Rating: 99.4%

MACHINIST LATHE MILL Unused Spot Facer Counterbore End Mill Cutter DrG
MACHINIST LATHE MILL Unused Spot Facer Counterbore End Mill Cutter DrG Ebay.com starting at $35.99

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gigigirl111

Rating: 99.4%

MORRIS WOOD TOOL 3/4in x 3/16in Adjustable Counterbore Style 5A RH Drill Bit BP
MORRIS WOOD TOOL 3/4in x 3/16in Adjustable Counterbore Style 5A RH Drill Bit BP Ebay.com starting at $18.00

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Camacetra

Rating: 99.5%

MORRIS WOOD TOOL 3/4in x 1/8in Adjustable Counterbore RH Drill Bit V Point Bit
MORRIS WOOD TOOL 3/4in x 1/8in Adjustable Counterbore RH Drill Bit V Point Bit Ebay.com starting at $24.00

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Camacetra

Rating: 99.5%

MORRIS WOOD TOOL 7/16in x 9/32in Adjustable Counterbore RH Brad Point Drill Bit
MORRIS WOOD TOOL 7/16in x 9/32in Adjustable Counterbore RH Brad Point Drill Bit Ebay.com starting at $11.00

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Camacetra

Rating: 99.5%

MORRIS WOOD TOOL 1in x .716in Adjustable Counterbore RH Drill Bit Brad Point CT
MORRIS WOOD TOOL 1in x .716in Adjustable Counterbore RH Drill Bit Brad Point CT Ebay.com starting at $24.00

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Camacetra

Rating: 99.5%

6pcs Shim -Liner .020 Counterbore Shim 5298564 Fits For Cummins ISX 1997-2015
6pcs Shim -Liner .020 Counterbore Shim 5298564 Fits For Cummins ISX 1997-2015 Ebay.com starting at $38.00

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romhardparts

Rating: 98.6%

LINK INDUSTRIES 0.532″ Drill HSSBright Finish Combo Drill &Counterbore 60-L2-301
LINK INDUSTRIES 0.532″ Drill HSSBright Finish Combo Drill &Counterbore 60-L2-301 Ebay.com starting at $20.80

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Industry Recycles

Rating: 99.4%

5298564 (6PACK) | Shim -Liner .020 Counterbore Shim for Cummins ISX 97-15
5298564 (6PACK) | Shim -Liner .020 Counterbore Shim for Cummins ISX 97-15 Ebay.com starting at $28.21

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PartPro Depot

Rating: 98.6%

HSS Morse 4 shank countersink Counter Sinker 38mm / 1-1/2", FLAT BOTTOM: 5/8"
HSS Morse 4 shank countersink Counter Sinker 38mm / 1-1/2", FLAT BOTTOM: 5/8" Ebay.com starting at $16.98

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Toolingstation

Rating: 99.5%

NEW 3/8" Reverse Counterbore (Back Spotfacers)
NEW 3/8" Reverse Counterbore (Back Spotfacers) Ebay.com starting at $7.50

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Reverse Counterbore: 3/4″ Dia 4 Fl HSS 190-9L
Reverse Counterbore: 3/4″ Dia 4 Fl HSS 190-9L Ebay.com starting at $34.30

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Industry Recycles

Rating: 99.4%

NEW! COUNTERBORES - 4 PIECE ASSORTMENT - 1/8" PILOT HOLES
NEW! COUNTERBORES - 4 PIECE ASSORTMENT - 1/8" PILOT HOLES Ebay.com starting at $20.00

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Kent-Moore Time-Sert Counterbore M10 x 1.5 J-42385-212
Kent-Moore Time-Sert Counterbore M10 x 1.5 J-42385-212 Ebay.com starting at $21.99

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Dealerwerx

Rating: 100.0%

Kent-Moore Time-Sert Counterbore M16 x 1.5 J-42385-862
Kent-Moore Time-Sert Counterbore M16 x 1.5 J-42385-862 Ebay.com starting at $21.99

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Dealerwerx

Rating: 100.0%

USED Vintage Alvord Polk Set of 8 Metric Counterbore Set 3.5-14.5mm 401-S-10
USED Vintage Alvord Polk Set of 8 Metric Counterbore Set 3.5-14.5mm 401-S-10 Ebay.com starting at $94.99

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Plourde's Tool Box Bargains

Rating: 100.0%

AP #300 1.0" Straight Shank Capscrew Counterbore, HSS  NEW
AP #300 1.0" Straight Shank Capscrew Counterbore, HSS NEW Ebay.com starting at $15.00

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KEO Cutters 55203 #5 Nominal High Speed Steel Counterbore .205" Head .125" Pilot
KEO Cutters 55203 #5 Nominal High Speed Steel Counterbore .205" Head .125" Pilot Ebay.com starting at $34.99

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S&S INDUSTRIAL SURPLUS

Rating: 99.8%

11/32 x 1/2"  HS COUNTERBORE REAMER Doall Bendix Beasly
11/32 x 1/2" HS COUNTERBORE REAMER Doall Bendix Beasly Ebay.com starting at $15.00

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packerboycwm

Rating: 99.3%

Hannibal Tool - Taper Shank Counterbore Carbide, 7/8” (.8750”) MT2 Shank, NEW
Hannibal Tool - Taper Shank Counterbore Carbide, 7/8” (.8750”) MT2 Shank, NEW Ebay.com starting at $79.99

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online tool supply

Rating: 100.0%

W.L. Fuller X86L 1-1/8 X 3/8 Counterbore
W.L. Fuller X86L 1-1/8 X 3/8 Counterbore Ebay.com starting at $78.98

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Epic Edeals

Rating: 99.3%

6pcs Shim -Liner .020 Counterbore Shim 5298564 Fits For Cummins ISX 1997-2015 US
6pcs Shim -Liner .020 Counterbore Shim 5298564 Fits For Cummins ISX 1997-2015 US Ebay.com starting at $57.00

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sammparts

Rating: 98.2%

NWT #10X1/8 COUNTERBORE PILOT LOT OF 10
NWT #10X1/8 COUNTERBORE PILOT LOT OF 10 Ebay.com starting at $20.10

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amtek tool depot

Rating: 99.0%

Putnam Hi-SpeedCS-13 Counterbore Drill Bit in tube
Putnam Hi-SpeedCS-13 Counterbore Drill Bit in tube Ebay.com starting at $9.99

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Red Stream Inc

Rating: 99.5%

Counterbore Set 7 Pcs HSS #6 8 10 1/4-1/2
Counterbore Set 7 Pcs HSS #6 8 10 1/4-1/2 Ebay.com starting at $51.99

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NATIONAL AIRCRAFT COUNTERBORE W/ INTERCHANGEABLE PILOT, 3/8", OAL 4-1/8"
NATIONAL AIRCRAFT COUNTERBORE W/ INTERCHANGEABLE PILOT, 3/8", OAL 4-1/8" Ebay.com starting at $15.00

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IRONTIME SALES

Rating: 99.1%

Competitive Carbide Inc. Carbide Counter Bore Tool CT-52018 REV 1
Competitive Carbide Inc. Carbide Counter Bore Tool CT-52018 REV 1 Ebay.com starting at $100.00

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carlod-4

Rating: 100.0%

3/4" Counterbore, Carbide Tipped, 3 Flutes, 1/2" Shank Diameter, Straight Sha...
3/4" Counterbore, Carbide Tipped, 3 Flutes, 1/2" Shank Diameter, Straight Sha... Ebay.com starting at $147.99

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SellSim_2Day_Shipping

Rating: 96.2%

13/16 COUNTERBORE, INTERCHANGABLE PILOT, 5/8 SK, 1/4 PILOT HOLE, NEW, USA
13/16 COUNTERBORE, INTERCHANGABLE PILOT, 5/8 SK, 1/4 PILOT HOLE, NEW, USA Ebay.com starting at $32.99

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All Merchandise Unlimited

Rating: 98.4%

5/8” With 5/16” SHANK PILOT FOR COUNTERBORE PILOT USA QUALITY
5/8” With 5/16” SHANK PILOT FOR COUNTERBORE PILOT USA QUALITY Ebay.com starting at $8.80

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fishfarmen

Rating: 99.6%

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(Lot Of 2 ) 13/32” With 3/16” SHANK PILOT FOR COUNTERBORE PILOT
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(Lot Of 3 ) 9/32” With 1/8” SHANK PILOT FOR COUNTERBORE PILOT
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Metcut? BACK SPOTFACER ?/ COUNTERBORE HOLDER?3/4 DRIVE
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Scientific Cutting Tools Ms16142-6R Port Tool,Ms16142,Reamer,9/16-18 Unf
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HSS Flat Countersink Pilot Slotting M3-M20 Capscrew Counterbore End Mill
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Central Tools 6434 Sleeve Height & Counterbore Gauge
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2 National 2MT 2 morse taper stub countersink counterbore holder #10 #20
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O’Skool 9/32 Inch X 1/2 Inch Counterbore Drill for 1/4" Screws, Flat Countersunk
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RESHARPENED METCUT HSS 2-3/16" 4-FLUTE COUNTERBORE 130-4281 high speed steel
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USED CLEVELAND USA EXTENDED LENGTH HSS 15/16" COUNTERBORE #3MT MT3
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USED CARBIDE INSERT INDEXABLE COUNTERBORE TOOL FCD-898 (CPGM 21.51)
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Scully & Jones Quick Change Counterbore  #2 Stub Morse Taper Shank 1-1/4" Dia.
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