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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
  8. /
  9. Counterbores
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Counterbores (929 items) - Page 25

No Product Image Available
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G321727829
Mfr # 902-000-195
product price:  $526.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G321727744
Mfr # 902-000-302
product price:  $185.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G621726300
Mfr # 902-000-123
product price:  $62.79
/ea
Internal Tool A Nc-312-312 N/C Counterbore 85-3121
Internal Tool

A Nc-312-312 N/C Counterbore

Zoro # G100402381
Mfr # 85-3121
product price:  $77.35
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 13 mm 156620 5X13
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 13 mm

Zoro # G914389717
Mfr # 156620 5X13
product price:  $31.79
/ea
Internal Tool A Nc-594-625 N/C Counterbore 85-5941
Internal Tool

A Nc-594-625 N/C Counterbore

Zoro # G900402505
Mfr # 85-5941
product price:  $317.99
/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:  $188.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G321726624
Mfr # 902-000-120
product price:  $67.39
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 11 mm 156620 5X11
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 11 mm

Zoro # G614389628
Mfr # 156620 5X11
product price:  $31.79
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221726151
Mfr # 902-000-075
product price:  $49.69
/ea
Morse Cap Screw Counterbore, Series 1766, 4 Screw, 0199 Bore Dia, 378 Overall Length, 4 Flutes, 01 25701
Morse

Cap Screw Counterbore, Series 1766, 4 Screw, 0199 Bore Dia, 378 Overall Length, 4 Flutes, 01

Zoro # G108028958
Mfr # 25701
product price:  $53.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G521726745
Mfr # 902-000-132
product price:  $70.59
/ea
Link Ua5-8MM Metric Shcs HSS Counterbore 72-L2-514
Link

Ua5-8MM Metric Shcs HSS Counterbore

Zoro # G7642759
Mfr # 72-L2-514
product price:  $32.95
/ea
No Product Image Available
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G621725273
Mfr # 902-000-293
product price:  $595.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G921726024
Mfr # 902-000-299
product price:  $281.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221725291
Mfr # 902-000-332
product price:  $53.39
/ea
Link 2.5MM Co 3Fl 3.0 Pilot X 5.4 Cbore 6.35 Shank X 100 Oal 75-CO-519
Link

2.5MM Co 3Fl 3.0 Pilot X 5.4 Cbore 6.35 Shank X 100 Oal

Zoro # G7639977
Mfr # 75-CO-519
product price:  $80.15
/ea
Super Tool Reduced Shank Counterbore, 13/16" D 52226
Super Tool

Reduced Shank Counterbore, 13/16" D

Zoro # G0331331
Mfr # 52226
product price:  $126.99
/ea
Super Tool Reduced Shank Counterbore, 5/16" D 52210
Super Tool

Reduced Shank Counterbore, 5/16" D

Zoro # G0331313
Mfr # 52210
product price:  $67.89
/ea
Link 8MM Co 3Fl 8.8 Pilot X 13.8 Cbore 7.94 Shank X 100 Oal 75-CO-524
Link

8MM Co 3Fl 8.8 Pilot X 13.8 Cbore 7.94 Shank X 100 Oal

Zoro # G7641246
Mfr # 75-CO-524
product price:  $85.45
/ea
Link #8 HSS Se .178 X .281 Drill .290 Cbore 5/16 Shank 1-15/32 Oal 50-L2-182
Link

#8 HSS Se .178 X .281 Drill .290 Cbore 5/16 Shank 1-15/32 Oal

Zoro # G7636215
Mfr # 50-L2-182
product price:  $21.45
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G621727673
Mfr # 902-000-323
product price:  $65.39
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G121726442
Mfr # 902-000-296
product price:  $537.99
/ea
Internal Tool A Nc-265-312 N/C Counterbore 85-2651
Internal Tool

A Nc-265-312 N/C Counterbore

Zoro # G000402450
Mfr # 85-2651
product price:  $79.15
/ea
Link 10MM HSS Se 10.32 X 14.29 Drill 16.66 Cbore 12.70 Shank 52.39 Oal 75-L2-525
Link

10MM HSS Se 10.32 X 14.29 Drill 16.66 Cbore 12.70 Shank 52.39 Oal

Zoro # G7637326
Mfr # 75-L2-525
product price:  $32.59
/ea
Link Ua3 #5 English Shcs HSS Counterbore 60-L2-293
Link

Ua3 #5 English Shcs HSS Counterbore

Zoro # G7636118
Mfr # 60-L2-293
product price:  $21.75
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 18-20, 10.2 mm 156620 5X10,2
Garant

Interchangeable Pilot Pin for Counterbore 156520 18-20, 10.2 mm

Zoro # G714389665
Mfr # 156620 5X10,2
product price:  $31.79
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G321726648
Mfr # 902-000-327
product price:  $60.49
/ea
Internal Tool A Nc-203-250 N/C Counterbore 85-2031
Internal Tool

A Nc-203-250 N/C Counterbore

Zoro # G800402360
Mfr # 85-2031
product price:  $54.05
/ea
Internal Tool A Nc-750-750 N/C Counterbore 85-7501
Internal Tool

A Nc-750-750 N/C Counterbore

Zoro # G900402642
Mfr # 85-7501
product price:  $424.99
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 24, 8.5 mm 156620 6X8,5
Garant

Interchangeable Pilot Pin for Counterbore 156520 24, 8.5 mm

Zoro # G314389683
Mfr # 156620 6X8,5
product price:  $36.45
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G121727166
Mfr # 902-000-300
product price:  $281.99
/ea
Link Ua4 #10 English Shcs HSS Counterbore 60-L2-296
Link

Ua4 #10 English Shcs HSS Counterbore

Zoro # G7643784
Mfr # 60-L2-296
product price:  $24.15
/ea
Garant Interchangeable Pilot Pin for Counterbore 156520 33-40, 22 mm 156620 10X22
Garant

Interchangeable Pilot Pin for Counterbore 156520 33-40, 22 mm

Zoro # G014389815
Mfr # 156620 10X22
product price:  $45.65
/ea
Tungaloy Solid End Mill Head, VGC117L10.0R03-, PK2 6859458
Tungaloy

Solid End Mill Head, VGC117L10.0R03-, PK2

Zoro # G801779058
Mfr # 6859458
product price:  $65.99
/pk 2, $33.00/ea
Harvey Tool Counterbores-Flat Bottom, 676716-C3, AlTiN, 1/4" Cutter Diameter, 1-5/16" Flute Length 676716-C3
Harvey Tool

Counterbores-Flat Bottom, 676716-C3, AlTiN, 1/4" Cutter Diameter, 1-5/16" Flute Length

Zoro # G522920609
Mfr # 676716-C3
product price:  $72.95
/ea
Counterbores (929 items) - Page 25
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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 BitsHole SawsSquare End MillsHammer Drill Bits
CountersinksSpiral Flute 3-Flute TapsExtra Long Drill BitsReduced Shank Drill BitsHigh Speed Steel Chucking Reamers
counter bore6-piece damask jacquard/solidinterchangeable pilot counterborepilot counterbore5/8 counterbore
metric shcscounterbores - flat bottom1-1/4 in counterborecleveland counterborecounter bore set

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