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  1. Home
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  3. Tools & Machining
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  5. Cutting Tools
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  7. Porting Tools & Counterbores
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  9. Counterbores

Counterbores (927 items) - Page 2

Harvey Tool Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: AlTiN 23424-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: AlTiN

Zoro # G7150966
Mfr # 23424-C3
product price: 
$110.99
/ea
Super Tool Counterbore, 7/8" D, Carbide Tipped 56411
Super Tool

Counterbore, 7/8" D, Carbide Tipped

Zoro # G0330117
Mfr # 56411
product price: 
$136.99
/ea
Super Tool Reduced Shank Counterbore, 1-3/8" D 52244
Super Tool

Reduced Shank Counterbore, 1-3/8" D

Zoro # G0331307
Mfr # 52244
product price: 
$198.99
/ea
Keo Counterbore Set, 7, Fractional Inch 902-000-293
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G621725273
Mfr # 902-000-293
product price: 
$647.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 9 mm 156620 5X9
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 9 mm

Zoro # G014389655
Mfr # 156620 5X9
product price: 
$33.15
/ea
Garant Counterbore with Interchangeable Pilot Pins, 24 mm 156520 24
Garant

Counterbore with Interchangeable Pilot Pins, 24 mm

Zoro # G714389740
Mfr # 156520 24
product price: 
$124.99
/ea
Super Tool Counterbore, 1-3/16" D, Carbide Tipped 59816
Super Tool

Counterbore, 1-3/16" D, Carbide Tipped

Zoro # G0329782
Mfr # 59816
product price: 
$155.99
/ea
Super Tool Counterbore, 1-1/4" D, Carbide Tipped 56417
Super Tool

Counterbore, 1-1/4" D, Carbide Tipped

Zoro # G0330108
Mfr # 56417
product price: 
$163.99
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.6 mm 156020 11X6,6
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 11X6.6 mm

Zoro # G814389626
Mfr # 156020 11X6,6
product price: 
$23.15
/ea
Super Tool Counterbore, 3/4" D, Carbide Tipped 59809
Super Tool

Counterbore, 3/4" D, Carbide Tipped

Zoro # G0329907
Mfr # 59809
product price: 
$123.99
/ea
Super Tool Counterbore, 5/8" D, Carbide Tipped 59807
Super Tool

Counterbore, 5/8" D, Carbide Tipped

Zoro # G0330132
Mfr # 59807
product price: 
$125.99
/ea
Hhip 1/2 X 17/32 High Speed Steel 3 Flute Solid  Pilot Counterbore 2007-0032
Hhip

1/2 X 17/32 High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2468069
Mfr # 2007-0032
product price: 
$20.79
/ea
Link #10 3Xd HSS Se .200 X .600 Drill .332 Cbore 3/8 Shank 2-1/4 Oal 50-L2-383
Link

#10 3Xd HSS Se .200 X .600 Drill .332 Cbore 3/8 Shank 2-1/4 Oal

Zoro # G7640004
Mfr # 50-L2-383
product price: 
$38.29
/ea
Hhip 3/8 X 13/32 High Speed Steel 3 Flute Solid  Pilot Counterbore 2007-0024
Hhip

3/8 X 13/32 High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2468087
Mfr # 2007-0024
product price: 
$18.49
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.4375" (7/16) 25528
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.4375" (7/16)

Zoro # G7262756
Mfr # 25528
product price: 
$170.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Number of Flutes: 4 25524
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Number of Flutes: 4

Zoro # G7260297
Mfr # 25524
product price: 
$144.99
/ea
Drill America 5/16" X 1/8" Pilots for Counterbore DEWPIL5/16X1/8
Drill America

5/16" X 1/8" Pilots for Counterbore

Zoro # G1742556
Mfr # DEWPIL5/16X1/8
product price: 
$9.65
/ea
Sold in mult. of 2 for $19.30
Drill America 1/2" X 3/8" Pilots for Counterbore DEWPIL1/2X3/8
Drill America

1/2" X 3/8" Pilots for Counterbore

Zoro # G1747176
Mfr # DEWPIL1/2X3/8
product price: 
$8.29
/ea
Drill America 1/4" HSS Solid Counterbore DEWCBRSOL1/4
Drill America

1/4" HSS Solid Counterbore

Zoro # G1744839
Mfr # DEWCBRSOL1/4
product price: 
$24.15
/ea
Drill America 5/16" HSS Solid Counterbore DEWCBRSOL5/16
Drill America

5/16" HSS Solid Counterbore

Zoro # G1741174
Mfr # DEWCBRSOL5/16
product price: 
$19.55
/ea
Drill America 5/8" X 5/16" Pilots for Counterbore DEWPIL5/8X5/16
Drill America

5/8" X 5/16" Pilots for Counterbore

Zoro # G1745496
Mfr # DEWPIL5/8X5/16
product price: 
$12.75
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 8X3.3 mm 156220 8X3,3
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 8X3.3 mm

Zoro # G014376389
Mfr # 156220 8X3,3
product price: 
$24.29
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.5 mm 156220 6,5X2,5
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.5 mm

Zoro # G714375965
Mfr # 156220 6,5X2,5
product price: 
$26.99
/ea
Hhip M5 X 5.5mm HSS 3 Flute Straight Shank Solid Pilot Counterbore 2007-0057
Hhip

M5 X 5.5mm HSS 3 Flute Straight Shank Solid Pilot Counterbore

Zoro # G2468288
Mfr # 2007-0057
product price: 
$15.19
/ea
Hhip No 8 X 11/64" High Speed Steel 3 Flute Solid Pilot Counterbore 2007-0008
Hhip

No 8 X 11/64" High Speed Steel 3 Flute Solid Pilot Counterbore

Zoro # G2468053
Mfr # 2007-0008
product price: 
$14.79
/ea
Super Tool Reduced Shank Counterbore, 13/32" D 52213
Super Tool

Reduced Shank Counterbore, 13/32" D

Zoro # G0331322
Mfr # 52213
product price: 
$89.25
/ea
Super Tool Reduced Shank Counterbore, 1/2" D 52216
Super Tool

Reduced Shank Counterbore, 1/2" D

Zoro # G0331340
Mfr # 52216
product price: 
$114.99
/ea
Drill America 7/16" HSS Solid Counterbore DEWCBRSOL7/16
Drill America

7/16" HSS Solid Counterbore

Zoro # G1745855
Mfr # DEWCBRSOL7/16
product price: 
$28.15
/ea
Drill America No 2 .085mm Machine Screw Solid Counterbore DEWCBRSOL2
Drill America

No 2 .085mm Machine Screw Solid Counterbore

Zoro # G1744699
Mfr # DEWCBRSOL2
product price: 
$9.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3125" (5/16) 23420-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3125" (5/16)

Zoro # G7155096
Mfr # 23420-C3
product price: 
$95.69
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3437" (11/32) 23422-C3
Harvey Tool

Counterbores - Flat Bottom, 0.3437" (11/32)

Zoro # G7157135
Mfr # 23422-C3
product price: 
$115.99
/ea
Keo Counterbore, 1/32 Clearance, Size 3/4, Co 902-000-035
Keo

Counterbore, 1/32 Clearance, Size 3/4, Co

Zoro # G3346673
Mfr # 902-000-035
product price: 
$244.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Flute Length: 1" 25524-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.3750" (3/8), Flute Length: 1"

Zoro # G7262126
Mfr # 25524-C3
product price: 
$166.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0625" (1/16) 23362
Harvey Tool

Counterbores - Flat Bottom, 0.0625" (1/16)

Zoro # G7242858
Mfr # 23362
product price: 
$51.29
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.5 mm 156020 10X5,5
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.5 mm

Zoro # G114389555
Mfr # 156020 10X5,5
product price: 
$21.49
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 18X8.5 mm 156220 18X8,5
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 18X8.5 mm

Zoro # G414375555
Mfr # 156220 18X8,5
product price: 
$42.19
/ea
Counterbores (927 items) - Page 2
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About Counterbores

Counterbores are specialized tools utilized in creating enlarged, flat-bottomed holes in various materials, primarily metal. They're essential when a fastener's head needs to be level with or beneath the surface of the worked material. Available in an array of sizes and shapes, these tools can accommodate diverse types of fasteners and feature different tip configurations like straight flute or spiral flute based on their intended use. Counterboring speeds differ according to the material being processed. These durable tools are typically crafted from high-speed steel (HSS) or cobalt steel for enhanced cutting performance, sometimes coated with titanium nitride (TiN) for superior wear resistance and lubricity when dealing with tougher materials such as stainless steel or aluminum. Industries ranging from automotive manufacturing and aerospace engineering to medical device production widely employ counterbores for precise hole creation necessary for mounting screws and other fasteners.

Related Categories

Hole SawsJobber Length Drill BitsDrill Bit SetsHammer Drill BitsReduced Shank Drill Bits
Center DrillsCountersinksTap SetsAuger Drill BitsHex Dies
1-1/4 in counterborehigh speed steelcleveland counterboreinterchangeable pilot counterbore6-piece damask jacquard/solid
metric shcscounter borepilot counterbore5/8 counterborecounter bore pilot

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