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  1. Home
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  7. Porting Tools & Counterbores
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  9. Counterbores
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Counterbores (929 items) - Page 10

Cleveland Counterbore, 1.375" L, 0.156" dia., Bright C46584
Cleveland

Counterbore, 1.375" L, 0.156" dia., Bright

Zoro # G4757151
Mfr # C46584
product price:  $29.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1562" (5/32) 25510-C3
Harvey Tool

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

Zoro # G7255415
Mfr # 25510-C3
product price:  $70.95
/ea
Cleveland Counterbore, 2.156" L, 0.313" dia., Bright C46614
Cleveland

Counterbore, 2.156" L, 0.313" dia., Bright

Zoro # G4767703
Mfr # C46614
product price:  $40.29
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2656" (17/64) 23417-C3
Harvey Tool

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

Zoro # G7149575
Mfr # 23417-C3
product price:  $78.15
/ea
Drill America 7/8" X 7/16" Pilots for Counterbore DEWPIL7/8X7/16
Drill America

7/8" X 7/16" Pilots for Counterbore

Zoro # G1744394
Mfr # DEWPIL7/8X7/16
product price:  $15.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2500" (1/4) 25516
Harvey Tool

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

Zoro # G7242998
Mfr # 25516
product price:  $83.65
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1719" (11/64) 25511
Harvey Tool

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

Zoro # G7257646
Mfr # 25511
product price:  $61.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1250" (1/8) 25508-C3
Harvey Tool

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

Zoro # G7242894
Mfr # 25508-C3
product price:  $59.99
/ea
Cleveland Counterbore, 2.187" L, 0.188" dia., Bright C46620
Cleveland

Counterbore, 2.187" L, 0.188" dia., Bright

Zoro # G4866010
Mfr # C46620
product price:  $40.29
/ea
Cleveland Counterbore, 1.875" L, 0.188" dia., Bright C46556
Cleveland

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

Zoro # G4823283
Mfr # C46556
product price:  $28.79
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1968" 2555M-C3
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1968"

Zoro # G7164878
Mfr # 2555M-C3
product price:  $96.59
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 15X9 mm 156020 15X9
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 15X9 mm

Zoro # G314389669
Mfr # 156020 15X9
product price:  $36.99
/ea
Harvey Tool Counterbores - Flat Bottom 2345M-C6
Harvey Tool

Counterbores - Flat Bottom

Zoro # G904195397
Mfr # 2345M-C6
product price:  $55.59
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4687" (15/32) 23430-C3
Harvey Tool

Counterbores - Flat Bottom, 0.4687" (15/32)

Zoro # G7159208
Mfr # 23430-C3
product price:  $141.99
/ea
Cleveland Counterbore, 2.187" L, 0.250" dia., Bright C46687
Cleveland

Counterbore, 2.187" L, 0.250" dia., Bright

Zoro # G4818867
Mfr # C46687
product price:  $68.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2187" (7/32) 23414
Harvey Tool

Counterbores - Flat Bottom, 0.2187" (7/32)

Zoro # G7151797
Mfr # 23414
product price:  $53.65
/ea
Drill America No 6 .137mm Machine Screw Solid Counterbore DEWCBRSOL6
Drill America

No 6 .137mm Machine Screw Solid Counterbore

Zoro # G1741357
Mfr # DEWCBRSOL6
product price:  $15.29
/ea
Cleveland Counterbore, 2.046" L, 0.313" dia., Bright C46587
Cleveland

Counterbore, 2.046" L, 0.313" dia., Bright

Zoro # G4812433
Mfr # C46587
product price:  $36.29
/ea
Cleveland Counterbore, 2.406" L, 0.313" dia., Bright C46678
Cleveland

Counterbore, 2.406" L, 0.313" dia., Bright

Zoro # G4833591
Mfr # C46678
product price:  $65.19
/ea
Keo Counterbore, 1/32 Clearance, Size No 5, Co 902-000-006
Keo

Counterbore, 1/32 Clearance, Size No 5, Co

Zoro # G0495774
Mfr # 902-000-006
product price:  $55.09
/ea
Harvey Tool 0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated 23427-C3
Harvey Tool

0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated

Zoro # G413081587
Mfr # 23427-C3
product price:  $106.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.5625" (9/16), Finish - Machining: AlTiN 23436-C3
Harvey Tool

Counterbores - Flat Bottom, 0.5625" (9/16), Finish - Machining: AlTiN

Zoro # G7157309
Mfr # 23436-C3
product price:  $182.53
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0394" 2331M-C3
Harvey Tool

Counterbores - Flat Bottom, 0.0394"

Zoro # G7148586
Mfr # 2331M-C3
product price:  $47.95
/ea
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:  $88.15
/ea
Keo Counterbore, 1/64 Clearance, Size No 5, Co 902-000-005
Keo

Counterbore, 1/64 Clearance, Size No 5, Co

Zoro # G1612362
Mfr # 902-000-005
product price:  $51.29
/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:  $47.95
/ea
Cleveland Counterbore, 1.937" L, 0.375" dia., Bright C46669
Cleveland

Counterbore, 1.937" L, 0.375" dia., Bright

Zoro # G4841492
Mfr # C46669
product price:  $58.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2500" (1/4), Flute Length: 7/8" 23416-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2500" (1/4), Flute Length: 7/8"

Zoro # G7151526
Mfr # 23416-C3
product price:  $55.25
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.4 mm 156020 6,5X3,4
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 6.5X3.4 mm

Zoro # G214389462
Mfr # 156020 6,5X3,4
product price:  $24.55
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1575", Overall Length: 3" 2554M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1575", Overall Length: 3"

Zoro # G7164808
Mfr # 2554M
product price:  $61.15
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.1181", Shank Dia.: 1/8" 2553M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.1181", Shank Dia.: 1/8"

Zoro # G7263359
Mfr # 2553M
product price:  $49.85
/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:  $59.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.0469" (3/64) 23347
Harvey Tool

Counterbores - Flat Bottom, 0.0469" (3/64)

Zoro # G7151474
Mfr # 23347
product price:  $40.99
/ea
Cleveland Counterbore, 1.500" L, 0.125" dia., Bright C46583
Cleveland

Counterbore, 1.500" L, 0.125" dia., Bright

Zoro # G4859309
Mfr # C46583
product price:  $29.99
/ea
Harvey Tool Counterbores - Flat Bottom, 0.6875" (11/16), Shank Dia.: 3/4" 23444
Harvey Tool

Counterbores - Flat Bottom, 0.6875" (11/16), Shank Dia.: 3/4"

Zoro # G7257637
Mfr # 23444
product price:  $297.99
/ea
Cleveland Counterbore, 1.437" L, 0.125" dia., Bright C46553
Cleveland

Counterbore, 1.437" L, 0.125" dia., Bright

Zoro # G4803500
Mfr # C46553
product price:  $28.79
/ea
Counterbores (929 items) - Page 10
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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.

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counter bore5/16 cobalt6-piece damask jacquard/solid1/4 counterbore50 chain link

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