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  1. Home
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  5. Cutting Tools
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  7. Porting Tools & Counterbores
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  9. Counterbores
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Counterbores (929 items) - Page 3

Cleveland Port Tool, 4.313" L, 0.437" dia., Bright C46431
Cleveland

Port Tool, 4.313" L, 0.437" dia., Bright

Zoro # G4758122
Mfr # C46431
product price:  $149.99
/ea
Cleveland Counterbore, 6.500" L, 0.500" dia., Bright C91712
Cleveland

Counterbore, 6.500" L, 0.500" dia., Bright

Zoro # G4772271
Mfr # C91712
product price:  $149.99
/ea
Cleveland Counterbore, 7.000" L, 0.500" dia., Bright C91833
Cleveland

Counterbore, 7.000" L, 0.500" dia., Bright

Zoro # G4876468
Mfr # C91833
product price:  $248.99
/ea
Cleveland Port Tool, 2.813" L, 0.250" dia., Bright C46898
Cleveland

Port Tool, 2.813" L, 0.250" dia., Bright

Zoro # G4821113
Mfr # C46898
product price:  $135.44
/ea
Keo No 6 through 1/2" +1/32 Oversize Kounterbore Set 902-000-042
Keo

No 6 through 1/2" +1/32 Oversize Kounterbore Set

Zoro # G2600656
Mfr # 902-000-042
product price:  $552.99
/ea
Keo Counterbore, 1/64 Clearance, Size 1/4, Co 902-000-017
Keo

Counterbore, 1/64 Clearance, Size 1/4, Co

Zoro # G1279327
Mfr # 902-000-017
product price:  $71.09
/ea
Keo Counterbore, 1/32 Clearance, Size 5/16, Co 902-000-021
Keo

Counterbore, 1/32 Clearance, Size 5/16, Co

Zoro # G2623661
Mfr # 902-000-021
product price:  $74.69
/ea
Cleveland Pilot for Counterbores, 3/32 in, 3/32 in C46523
Cleveland

Pilot for Counterbores, 3/32 in, 3/32 in

Zoro # G4800210
Mfr # C46523
product price:  $31.71
/ea
Cleveland Port Tool, 2.375" L, 0.250" dia., Bright C46886
Cleveland

Port Tool, 2.375" L, 0.250" dia., Bright

Zoro # G4764151
Mfr # C46886
product price:  $84.69
/ea
Drill America 7/16" HSS Solid Counterbore DEWCBRSOL7/16
Drill America

7/16" HSS Solid Counterbore

Zoro # G1745855
Mfr # DEWCBRSOL7/16
product price:  $28.99
/ea
Cleveland Counterbore Set, 8 Pieces, Bright C91770
Cleveland

Counterbore Set, 8 Pieces, Bright

Zoro # G4865968
Mfr # C91770
product price:  $1,099.99
/ea
Harvey Tool 0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated 23689-C3
Harvey Tool

0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated

Zoro # G713082161
Mfr # 23689-C3
product price:  $72.85
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64), Overall Length: 4" 25513-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2031" (13/64), Overall Length: 4"

Zoro # G7262607
Mfr # 25513-C3
product price:  $92.49
/ea
Cleveland Counterbore Set, 9 Pieces, Bright C91750
Cleveland

Counterbore Set, 9 Pieces, Bright

Zoro # G4823450
Mfr # C91750
product price:  $1,099.99
/ea
Cleveland Counterbore, 1.187" L, 0.125" dia., Bright C46558
Cleveland

Counterbore, 1.187" L, 0.125" dia., Bright

Zoro # G4874620
Mfr # C46558
product price:  $29.99
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.5 mm 156020 8X4,5
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.5 mm

Zoro # G114389470
Mfr # 156020 8X4,5
product price:  $19.79
/ea
Harvey Tool Counterbores - Flat Bottom 23350
Harvey Tool

Counterbores - Flat Bottom

Zoro # G201019020
Mfr # 23350
product price:  $37.65
/ea
Drill America No 10 .189mm Machine Screw Solid Counterbore DEWCBRSOL10
Drill America

No 10 .189mm Machine Screw Solid Counterbore

Zoro # G1743999
Mfr # DEWCBRSOL10
product price:  $13.05
/ea
Cleveland Counterbore, 1.875" L, 0.188" dia., Bright C46560
Cleveland

Counterbore, 1.875" L, 0.188" dia., Bright

Zoro # G4784731
Mfr # C46560
product price:  $29.99
/ea
Harvey Tool Counterbores - Flat Bottom 23380
Harvey Tool

Counterbores - Flat Bottom

Zoro # G901019214
Mfr # 23380
product price:  $37.29
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2500" (1/4) 23416-C6
Harvey Tool

Counterbores - Flat Bottom, 0.2500" (1/4)

Zoro # G7149356
Mfr # 23416-C6
product price:  $65.85
/ea
Cleveland Counterbore, 1.875" L, 0.250" dia., Bright C46593
Cleveland

Counterbore, 1.875" L, 0.250" dia., Bright

Zoro # G4829181
Mfr # C46593
product price:  $37.79
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.3 mm 156020 10X5,3
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 10X5.3 mm

Zoro # G614389642
Mfr # 156020 10X5,3
product price:  $21.49
/ea
Cleveland Counterbore, 3.001" L, 0.438" dia., Bright C46716
Cleveland

Counterbore, 3.001" L, 0.438" dia., Bright

Zoro # G4792851
Mfr # C46716
product price:  $90.19
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1719" (11/64) 25511-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1719" (11/64)

Zoro # G7242885
Mfr # 25511-C3
product price:  $68.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: Uncoated 23424
Harvey Tool

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

Zoro # G7150920
Mfr # 23424
product price:  $79.29
/ea
Drill America No 4 .111mm Machine Screw Solid Counterbore DEWCBRSOL4
Drill America

No 4 .111mm Machine Screw Solid Counterbore

Zoro # G1746835
Mfr # DEWCBRSOL4
product price:  $8.85
/ea
Harvey Tool Counterbores - Flat Bottom 23330
Harvey Tool

Counterbores - Flat Bottom

Zoro # G301019968
Mfr # 23330
product price:  $41.25
/ea
Harvey Tool Counterbores - Flat Bottom 23320-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G601020039
Mfr # 23320-C3
product price:  $41.99
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 10X4.2 mm 156220 10X4,2
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 10X4.2 mm

Zoro # G514375578
Mfr # 156220 10X4,2
product price:  $22.75
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2031" (13/64) 23413-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2031" (13/64)

Zoro # G7153276
Mfr # 23413-C3
product price:  $63.25
/ea
Cleveland Counterbore, 2.000" L, 0.250" dia., Bright C46645
Cleveland

Counterbore, 2.000" L, 0.250" dia., Bright

Zoro # G4877603
Mfr # C46645
product price:  $51.59
/ea
Harvey Tool 0.2420'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated 23641-C3
Harvey Tool

0.2420'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated

Zoro # G413082188
Mfr # 23641-C3
product price:  $59.39
/ea
Cleveland Port Tool, 4.313" L, 0.437" dia., Bright C46430
Cleveland

Port Tool, 4.313" L, 0.437" dia., Bright

Zoro # G4860873
Mfr # C46430
product price:  $133.99
/ea
Cleveland Counterbore, 8.250" L, 0.750" dia., Bright C91729
Cleveland

Counterbore, 8.250" L, 0.750" dia., Bright

Zoro # G4838850
Mfr # C91729
product price:  $214.99
/ea
Drill America No 5 .141 Continuous Pilot Capscrew Counterbore DEWCSCBR5
Drill America

No 5 .141 Continuous Pilot Capscrew Counterbore

Zoro # G1739640
Mfr # DEWCSCBR5
product price:  $25.15
/ea
Counterbores (929 items) - Page 3
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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

Port ToolsJobber Length Drill BitsCountersinksHole SawsSpiral Point 2-Flute Taps
Square End MillsHammer Drill BitsExtra Long Drill BitsRound DiesSpiral Flute 3-Flute Taps
cobalt 1/2cleveland counterbore6-piece damask jacquard/solid1-1/4 in counterbore5/16 counterbore
5/16 cobalt50 chain link#50 master link5/8 counterbore1/4 counterbore

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