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Counterboring Cutters

Counterbore drills are dedicated cutting tools for drilling counterbore holes by attaching to a milling machine or drill press. The countersinking cutting tool that sinks the bolt head is also called a sinking milling machine, and has an induction pilot section that makes the pilot hole and the countersink hole concentric. There are blade shapes that can be used for bolt through holes and counterboring at the same time, those that are suitable for countersunk screws, and those that are suitable for hex socket head bolts. There are also punches and extrusion pins suitable for mold processing. As the tool base material, metals that can withstand cutting, such as high-speed steel and cemented carbide, are often used, and some products have been subjected to coating to increase durability. When selecting a countersunk product, it is necessary to check the size of the tip, the shape and size of the countersink hole that can be processed, etc. in advance

20 items

: 30; 45; 60

Days to Ship	All 8 Days or Less 9 Days or Less 10 Days or Less 11 Days or Less 12 Days or Less 13 Days or Less

High-Speed Steel Hex Socket Head Bolt Countersink Cutter

MISUMI

A staple item for countersink machining (C-Value)

Volume Discount

Price Reduction
Days to Ship: 8 Days or more
Carbide Inversed Spot Facing Cutter K10 CUKC

EIKOSHA

[Features]
· 1-flute carbide type.
· A cutter for back surface countersinking.
· Material: K10.

Volume Discount
Days to Ship: 9 Days or more
Counterbore for Flat Head Screw Pilot Holes with Drill

FUKUDA

•Tool Material Type: High-speed steel (SKH51)
•Machining Application: Countersinking / Drilling
•Torsion Angle (θ) (°): Torsion (25°)
•Angle (θ) (°): 90°
•Number Of Flutes (sheet): 2

Volume Discount
Days to Ship: 8 Days or more
Straight Shank Counterbore for Bolts with Hexagonal Holes CB

EIKOSHA

A type of drill for countersinking that integrates functions of drilling and fluting.
[Features]
· Hole drilling for hex socket head bolt and countersinking can be performed simultaneously.
· 4-flute HSS type.
· A straight shank.
[Applications]
· Ideal for simultaneous machining involving drilling and sinking.

Volume Discount
Days to Ship: 8 Days or more
Inversed Spot Facing Cutter with TiN Coating UKCC

EIKOSHA

[Features]
· 1-flute HSS type.
· A cutter for back surface countersinking.
· TiN coating.

Volume Discount
Days to Ship: 9 Days or more
Counterbore for Extrusion Pin CBO

EIKOSHA

[Features]
· 4-flute HSS type.
· Counterbore for extrusion pin.

Volume Discount
Days to Ship: 9 Days or more
Carbide Super Mini W Angular Slim Shank CSMW-S

EIKOSHA

[Features]
· Carbide W angular.
· For surface chamfer, V groove, etc.

Volume Discount
Days to Ship: 9 Days or more
Reverse Countersinking Mini Chamfer

MISUMI

A tool that's capable of chamfering and deburring both the back and front of drill holes

Volume Discount

Spec Expansion

Price Reduction
Days to Ship: 10 Days or more
Long Shank Counterbore

FUKUDA

JIS standard mill for machining sunken holes. A long shank type which allows for machining in deep sections.

Volume Discount
Days to Ship: 8 Days or more
Counterbore for Knockout Pins

FUKUDA

Used for counterboring of extrusion pins for plastic molds, etc.

Volume Discount
Days to Ship: 8 Days or more
Counterbore with Drill

FUKUDA

•Tool Material Type: High-speed steel (SKH51)
•Machining Application: Countersinking / Drilling
•Torsion Angle (θ) (°): Torsion (25°)
•Number Of Flutes (sheet): 2
•Coating: Non-Coated

Volume Discount
Days to Ship: 8 Days or more
Carbide Counter Bore

EIKOSHA

Carbide Sink Cutter
For complete product overview and details on Carbide Counter Bore see the sections below:

Volume Discount
Days to Ship: 8 Days or more
Long Shank Sunken-Milled for Bolt w/ Hex Hole

EIKOSHA

A long type cutter used for sinking machining of HSS for spot facing.
[Features]
· Since there is a guide that matches the standard of the hex socket head bolt on the head component, chattering is minimal.
· As it is a long type, it supports work in deep places.
[Applications]
· Used for machining sunk holes for hexagon socket head bolts.

Volume Discount
Days to Ship: 8 Days or more
Eagle Cut

FUJIGEN

[Features]
· Simultaneous countersinking and chamfering of upper hole and pilot hole. Reduced processes. Reduction in cost and time with a unique geometric tip

Volume Discount
Days to Ship: 8 Days or more
Birdie Cut

FUJIGEN

[Features]
· No restriction on depth of countersinking. Reduced processes. Reduction in cost and time with a unique geometric tip

Volume Discount
Days to Ship: 12 Days or more
Milling Cutter for Small Countersunk Screws CBS

EIKOSHA

[Features]
· 4-flute HSS type.
· Counterbore for flat-head screws.

Volume Discount
Days to Ship: 8 Days or more
Carbide Inversed Spot Facing Cutter P20 CUKC

EIKOSHA

[Features]
· 1-flute carbide type.
· A cutter for back surface countersinking.
· Material: P20.

Volume Discount
Days to Ship: 8 Days or more
Inversed Spot Facing Cutter UKC

EIKOSHA

For countersinking eccentric HSS cutter.
[Features]
· A countersinking cutter that makes use of eccentricity.
· 1-flute HSS type.
[Applications]
· Ideal for back side counterboring.

Volume Discount
Days to Ship: 9 Days or more
Tapered Shank Counterbore for Bolts with Hexagonal Holes CBT

EIKOSHA

[Features]
· 4-flute HSS type.
· Counterboring for hexagon socket head bolts.
· Tapered shank.

Volume Discount
Days to Ship: 9 Days or more
Counterbore Straight Shank with Carbide Pilot CZCS

EIKOSHA

[Features]
· With pilot, meaning no eccentricity.
· The pilot is replaceable, and the diameter is changeable.
· Three flutes for excellent stability.
· Capable of heavy cutting.

Volume Discount
Days to Ship: 9 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more

Days to Ship:	9 Days or more

Days to Ship:	9 Days or more

Days to Ship:	10 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	12 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more

Days to Ship:	9 Days or more

Days to Ship:	9 Days or more


Brand
Product Series
Days to Ship

	Price Reduction							Spec Expansion Price Reduction
Brand	MISUMI	EIKOSHA	FUKUDA	EIKOSHA	EIKOSHA	EIKOSHA	EIKOSHA	MISUMI	FUKUDA	FUKUDA	FUKUDA	EIKOSHA	EIKOSHA	FUJIGEN	FUJIGEN	EIKOSHA	EIKOSHA	EIKOSHA	EIKOSHA	EIKOSHA
Product Series	High-Speed Steel Hex Socket Head Bolt Countersink Cutter	Carbide Inversed Spot Facing Cutter K10 CUKC	Counterbore for Flat Head Screw Pilot Holes with Drill	Straight Shank Counterbore for Bolts with Hexagonal Holes CB	Inversed Spot Facing Cutter with TiN Coating UKCC	Counterbore for Extrusion Pin CBO	Carbide Super Mini W Angular Slim Shank CSMW-S	Reverse Countersinking Mini Chamfer	Long Shank Counterbore	Counterbore for Knockout Pins	Counterbore with Drill	Carbide Counter Bore	Long Shank Sunken-Milled for Bolt w/ Hex Hole	Eagle Cut	Birdie Cut	Milling Cutter for Small Countersunk Screws CBS	Carbide Inversed Spot Facing Cutter P20 CUKC	Inversed Spot Facing Cutter UKC	Tapered Shank Counterbore for Bolts with Hexagonal Holes CBT	Counterbore Straight Shank with Carbide Pilot CZCS
Days to Ship	8 Days or more	9 Days or more	8 Days or more	8 Days or more	9 Days or more	9 Days or more	9 Days or more	10 Days or more	8 Days or more	8 Days or more	8 Days or more	8 Days or more	8 Days or more	8 Days or more	12 Days or more	8 Days or more	8 Days or more	9 Days or more	9 Days or more	9 Days or more