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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
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Counterbores (929 items) - Page 21

Hhip 5/16 X 7/16" High Speed Steel 2 Flute Solid  Cap Screw Counterbore 2007-0106
Hhip

5/16 X 7/16" High Speed Steel 2 Flute Solid Cap Screw Counterbore

Zoro # G2467895
Mfr # 2007-0106
product price:  $17.99
/ea
Super Tool Counterbore, 7/8" D, Carbide Tipped 59811
Super Tool

Counterbore, 7/8" D, Carbide Tipped

Zoro # G0329968
Mfr # 59811
product price:  $149.99
/ea
Qualtech Counterbore, Morse Taper Shank, Series DEWCBR, 238 Bore, 978 Overall Length, 5 Shank Diamete DEWCBRTS2-3/8
Qualtech

Counterbore, Morse Taper Shank, Series DEWCBR, 238 Bore, 978 Overall Length, 5 Shank Diamete

Zoro # G708029089
Mfr # DEWCBRTS2-3/8
product price:  $404.99
/ea
Link Ua7-1/2 English Shcs HSS Counterbore 60-L2-301
Link

Ua7-1/2 English Shcs HSS Counterbore

Zoro # G7644868
Mfr # 60-L2-301
product price:  $52.39
/ea
Link Ua3-3MM Metric Shcs HSS Counterbore 72-L2-510
Link

Ua3-3MM Metric Shcs HSS Counterbore

Zoro # G7636075
Mfr # 72-L2-510
product price:  $23.49
/ea
Morse Cap Screw Counterbore, Straight Shank, Series 1766, 8 mm Screw, 05315 Bore Dia, 612 Overall Le 25750
Morse

Cap Screw Counterbore, Straight Shank, Series 1766, 8 mm Screw, 05315 Bore Dia, 612 Overall Le

Zoro # G608029127
Mfr # 25750
product price:  $89.95
/ea
Internal Tool A Nc-219-250 N/C Counterbore 85-2191
Internal Tool

A Nc-219-250 N/C Counterbore

Zoro # G900402406
Mfr # 85-2191
product price:  $56.75
/ea
Super Tool Reduced Shank Counterbore, 1-7/16" D 52246
Super Tool

Reduced Shank Counterbore, 1-7/16" D

Zoro # G0331392
Mfr # 52246
product price:  $192.99
/ea
Link 16MM Co 3Fl 16.8 Pilot X 24.8 Cbore 12.7 Shank X 150 Oal 75-CO-528
Link

16MM Co 3Fl 16.8 Pilot X 24.8 Cbore 12.7 Shank X 150 Oal

Zoro # G7636206
Mfr # 75-CO-528
product price:  $131.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221726151
Mfr # 902-000-075
product price:  $49.69
/ea
Tungaloy Solid End Mill Head, VGC098L09.0R03-, PK2 6859366
Tungaloy

Solid End Mill Head, VGC098L09.0R03-, PK2

Zoro # G001779070
Mfr # 6859366
product price:  $121.99
/pk 2, $61.00/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G421726128
Mfr # 902-000-159
product price:  $115.99
/ea
Super Tool Counterbore, 1-5/16" D, Carbide Tipped 56418
Super Tool

Counterbore, 1-5/16" D, Carbide Tipped

Zoro # G0329767
Mfr # 56418
product price:  $166.99
/ea
Hhip 6 Piece M4-M12 HSS 3 Flute Straight Shank Solid Pilot Counterbore Set 2007-0001
Hhip

6 Piece M4-M12 HSS 3 Flute Straight Shank Solid Pilot Counterbore Set

Zoro # G612482277
Mfr # 2007-0001
product price:  $37.29
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G521726745
Mfr # 902-000-132
product price:  $70.59
/ea
No Product Image Available
Keo

Counterbore, Metric, 80 mm

Zoro # G521725885
Mfr # 902-000-237
product price:  $65.89
/ea
Super Tool Counterbore, 1-13/16" D, Carbide Tipped 56425
Super Tool

Counterbore, 1-13/16" D, Carbide Tipped

Zoro # G0329922
Mfr # 56425
product price:  $396.99
/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
No Product Image Available
Keo

Counterbore, Metric, 71 mm

Zoro # G921725638
Mfr # 902-000-213
product price:  $54.49
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G421724704
Mfr # 902-000-171
product price:  $237.99
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G321727119
Mfr # 902-000-111
product price:  $62.19
/ea
Link #10 HSS Se .200 X .312 Drill .332 Cbore 5/16 Shank 1-1/2 Oal 50-L2-183
Link

#10 HSS Se .200 X .312 Drill .332 Cbore 5/16 Shank 1-1/2 Oal

Zoro # G7638875
Mfr # 50-L2-183
product price:  $20.35
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G821726032
Mfr # 902-000-318
product price:  $75.89
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G221725291
Mfr # 902-000-332
product price:  $53.39
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 7 in

Zoro # G221726816
Mfr # 902-000-180
product price:  $351.99
/ea
Internal Tool A Nc-250-250 N/C Counterbore 85-2501
Internal Tool

A Nc-250-250 N/C Counterbore

Zoro # G600402430
Mfr # 85-2501
product price:  $56.75
/ea
Link 3MM HSS Se 3.57 X 6.35 Drill 5.95 Cbore 6.35 Shank 31.75 Oal 75-L2-520
Link

3MM HSS Se 3.57 X 6.35 Drill 5.95 Cbore 6.35 Shank 31.75 Oal

Zoro # G7636136
Mfr # 75-L2-520
product price:  $21.75
/ea
Internal Tool A Nc-140-187 N/C Counterbore 85-1401
Internal Tool

A Nc-140-187 N/C Counterbore

Zoro # G600402416
Mfr # 85-1401
product price:  $49.29
/ea
Link Ua3 #6 English Shcs HSS Counterbore 60-L2-294
Link

Ua3 #6 English Shcs HSS Counterbore

Zoro # G7638769
Mfr # 60-L2-294
product price:  $22.65
/ea
No Product Image Available
Keo

Counterbore Set, 7, Fractional Inch

Zoro # G621725273
Mfr # 902-000-293
product price:  $595.99
/ea
Link 12MM Co 3Fl 12.8 Pilot X 18.8 Cbore 9.53 Shank X 125 Oal 75-CO-526
Link

12MM Co 3Fl 12.8 Pilot X 18.8 Cbore 9.53 Shank X 125 Oal

Zoro # G7641264
Mfr # 75-CO-526
product price:  $108.99
/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
No Product Image Available
Keo

Counterbore, Decimal Inch, 5 in

Zoro # G821726605
Mfr # 902-000-307
product price:  $116.99
/ea
Harvey Tool Counterbores-Flat Bottom, 676716, Uncoated, 1/4" Cutter Diameter, 1-5/16" Flute Length 676716
Harvey Tool

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

Zoro # G722920553
Mfr # 676716
product price:  $62.25
/ea
Link No 10 Co 3Fl 0.221 Pilot X 0.346 Cbore 5/16" Shank X 4" Oal 50-CO-183
Link

No 10 Co 3Fl 0.221 Pilot X 0.346 Cbore 5/16" Shank X 4" Oal

Zoro # G7637308
Mfr # 50-CO-183
product price:  $75.75
/ea
No Product Image Available
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G421726517
Mfr # 902-000-322
product price:  $65.99
/ea
Counterbores (929 items) - Page 21
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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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