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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 7

Harvey Tool 0.2812 in. 9/32 Cutter dia x 0.875 in. 7/8 Flute Length Carbide Flat Bottom Counterbore 731618
Harvey Tool

0.2812 in. 9/32 Cutter dia x 0.875 in. 7/8 Flute Length Carbide Flat Bottom Counterbore

Zoro # G211325203
Mfr # 731618
product price: 
$86.29
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.4375" (7/16) 25528-C3
Harvey Tool

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

Zoro # G7265504
Mfr # 25528-C3
product price: 
$192.99
/ea
Drill America No 12 .215mm Machine Screw Solid Counterbore DEWCBRSOL12
Drill America

No 12 .215mm Machine Screw Solid Counterbore

Zoro # G1739564
Mfr # DEWCBRSOL12
product price: 
$16.25
/ea
Keo Counterbore, Decimal Inch, 3 in 902-000-072
Keo

Counterbore, Decimal Inch, 3 in

Zoro # G121727616
Mfr # 902-000-072
product price: 
$53.49
/ea
Harvey Tool 5/32 Cutter dia. x 0.6250 in. 5/8 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731610-C3
Harvey Tool

5/32 Cutter dia. x 0.6250 in. 5/8 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G411325119
Mfr # 731610-C3
product price: 
$61.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32) 25493-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32)

Zoro # G7254618
Mfr # 25493-C3
product price: 
$71.89
/ea
Drill America No 8 11/64" Continuous Pilot Capscrew Counterbore DEWCSCBR8
Drill America

No 8 11/64" Continuous Pilot Capscrew Counterbore

Zoro # G1741278
Mfr # DEWCSCBR8
product price: 
$23.99
/ea
Garant Counterbore Set in a Case, 6 Pieces, Type: K 156420 K
Garant

Counterbore Set in a Case, 6 Pieces, Type: K

Zoro # G714389849
Mfr # 156420 K
product price: 
$212.99
/ea
Harvey Tool 3/16 Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731612-C3
Harvey Tool

3/16 Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G011325069
Mfr # 731612-C3
product price: 
$61.15
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-114
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G821726896
Mfr # 902-000-114
product price: 
$70.69
/ea
Harvey Tool Counterbores - Flat Bottom 23409-C6
Harvey Tool

Counterbores - Flat Bottom

Zoro # G604195383
Mfr # 23409-C6
product price: 
$56.89
/ea
Keo Counterbore, Decimal Inch, 6 in 902-000-302
Keo

Counterbore, Decimal Inch, 6 in

Zoro # G321727744
Mfr # 902-000-302
product price: 
$202.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32), Shank Dia.: 1/8" 25431
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0312" (1/32), Shank Dia.: 1/8"

Zoro # G7257244
Mfr # 25431
product price: 
$64.19
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32) 25510
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32)

Zoro # G7245195
Mfr # 25510
product price: 
$73.19
/ea
Keo Counterbore, Decimal Inch, 4-1/2 in 902-000-314
Keo

Counterbore, Decimal Inch, 4-1/2 in

Zoro # G221724614
Mfr # 902-000-314
product price: 
$86.15
/ea
Harvey Tool Counterbores - Flat Bottom 23320
Harvey Tool

Counterbores - Flat Bottom

Zoro # G601022507
Mfr # 23320
product price: 
$52.79
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1875" (3/16), Overall Length: 2" 23412-C6
Harvey Tool

Counterbores - Flat Bottom, 0.1875" (3/16), Overall Length: 2"

Zoro # G7153206
Mfr # 23412-C6
product price: 
$60.49
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1406" (9/64) 23409
Harvey Tool

Counterbores - Flat Bottom, 0.1406" (9/64)

Zoro # G7149338
Mfr # 23409
product price: 
$49.15
/ea
Drill America 1/4" 9/32" Continuous Pilot Capscrew Counterbore DEWCSCBR1/4
Drill America

1/4" 9/32" Continuous Pilot Capscrew Counterbore

Zoro # G1741740
Mfr # DEWCSCBR1/4
product price: 
$29.35
/ea
Drill America 5/8" 21/32" Continuous Pilot Capscrew Counterbore DEWCSCBR5/8
Drill America

5/8" 21/32" Continuous Pilot Capscrew Counterbore

Zoro # G1742644
Mfr # DEWCSCBR5/8
product price: 
$54.45
/ea
Harvey Tool 0.1250 in. 1/8 Cutter dia x 1/2 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731608
Harvey Tool

0.1250 in. 1/8 Cutter dia x 1/2 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G911324988
Mfr # 731608
product price: 
$54.79
/ea
Keo Counterbore, Metric, 71 mm 902-000-198
Keo

Counterbore, Metric, 71 mm

Zoro # G721725548
Mfr # 902-000-198
product price: 
$53.79
/ea
Harvey Tool 0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated 23731-C3
Harvey Tool

0.3320'' Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated

Zoro # G813082092
Mfr # 23731-C3
product price: 
$112.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32) 25493
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.0937" (3/32)

Zoro # G7254024
Mfr # 25493
product price: 
$66.39
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0900", Finish - Machining: AlTiN 23390-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0900", Finish - Machining: AlTiN

Zoro # G7154439
Mfr # 23390-C3
product price: 
$57.79
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1575" 2554M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1575"

Zoro # G7164835
Mfr # 2554M-C3
product price: 
$85.89
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2656" (17/64) 25517-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2656" (17/64)

Zoro # G7166436
Mfr # 25517-C3
product price: 
$137.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1250" (1/8) 23408
Harvey Tool

Counterbores - Flat Bottom, 0.1250" (1/8)

Zoro # G7153845
Mfr # 23408
product price: 
$51.29
/ea
Keo Counterbore, Metric, 100 mm 902-000-261
Keo

Counterbore, Metric, 100 mm

Zoro # G121726640
Mfr # 902-000-261
product price: 
$112.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1094" (7/64) 23407-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1094" (7/64)

Zoro # G7152436
Mfr # 23407-C3
product price: 
$60.15
/ea
Keo Counterbore, Metric, 71 mm 902-000-219
Keo

Counterbore, Metric, 71 mm

Zoro # G621726607
Mfr # 902-000-219
product price: 
$62.29
/ea
Harvey Tool Counterbores - Flat Bottom, 0.6250" (5/8) 23440-C3
Harvey Tool

Counterbores - Flat Bottom, 0.6250" (5/8)

Zoro # G7240155
Mfr # 23440-C3
product price: 
$282.99
/ea
Keo Counterbore, Metric, 100 mm 902-000-267
Keo

Counterbore, Metric, 100 mm

Zoro # G421727507
Mfr # 902-000-267
product price: 
$112.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3937" 2340M
Harvey Tool

Counterbores - Flat Bottom, 0.3937"

Zoro # G7255290
Mfr # 2340M
product price: 
$117.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.1181", Number of Flutes: 4 2343M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.1181", Number of Flutes: 4

Zoro # G7164765
Mfr # 2343M-C3
product price: 
$60.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0550" 23355-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0550"

Zoro # G7255659
Mfr # 23355-C3
product price: 
$57.99
/ea
Counterbores (927 items) - Page 7
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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 BitsCountersinksReduced Shank Drill BitsDrill Bit Sets
Hammer Drill BitsCenter DrillsTap SetsAuger Drill BitsTap Wrenches
cleveland counterborecounter bore pilot5/8 counterborepilot counterboreinterchangeable pilot counterbore
high speed steelmetric shcs1-1/4 in counterbore6-piece damask jacquard/solidcounter bore set

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