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Best Combined Drill Countersinks - Buying Guide

Last Updated: 03/24/2019

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Bestselling Combined Drill Countersinks on Amazon

  1. Atoplee Industrial Tools 5 Pc Premium HSS 60 Center Drill Combined Drill & Countersink Lathe Mill ...
  2. 5pcs HSS 60 Degree Combined Lathe Mill Center Drill bit Countersink Bit Set Tool
  3. RedLine Tools - #4 Center Drill Carbide Combined Drill Countersink, AlTiN Finish, 2 Flute, 60 Point...
  4. KEO 10000 High-Speed Steel Plain Combined Drill and Countersink Set, Uncoated (Bright) Finish, 60 De...
  5. Proster Center Drill Mill Cutter 5 Pcs Combined Drill 6PCS HSS 4 Flute Straight End Mill Cutters
  6. Cobra Carbide 31516 Micro Grain Solid Carbide Combined Drill Bit and Countersink, Uncoated (Bright) ...
  7. Dormer A221N4 Centre Drill, Bright Coating, Cobalt High Speed Steel, 0.125" Head Diameter, 1/8" Flut...
  8. Kodiak USA Made Size 4 Combination Drill and Countersink - Solid Carbide ALTIN Coated
  9. 6 Pcs Metric 60 Degree Lathe Mill HSS Center Drill Combined Countersinks Drill Bit
  10. HSS Center Drill Set 60 Degree Combined Countersink #1,2,3,4,5 Machinist

  #1

Atoplee Industrial Tools 5 Pc Premium HSS 60 Center Drill Combined Drill & Countersink Lathe Mill Tool Set

 PartNumber: FBA_ATO-5024   |   Asin: B00M3TEF4I

Features:

100% quality and Brand new.
This listing is for a set of 5 HSS Center Drills.
Plain style 60 angle used for producing center holes in workpieces which require precision drilling or machining between centers.
It also used as starter holes to prevent a drill bit from "walking".
Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking.
Used for producing center holds in components or work pieces with require machining between centers.

Package Included:

A set of 5 HSS Center Drills

Features

  • Color: silver
  • Material: HSS
  • Tip angles: 60
  • It includes sizes: 1/8 3/16 1/4 5/16 3/8 in tip diameter
  • Quantity: 5pcs HSS Center Drills
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Brand: ATOPLEE   |   Manufacturer: ATOPLEE

Package Dimensions: 0.4 x 5.9 x 6.9 inches (1.0 x 15.0 x 17.5 cm)

Amazon Price: $7.40 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $7.40

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  #2

5pcs HSS 60 Degree Combined Lathe Mill Center Drill bit Countersink Bit Set Tool

 Ean: 0745360527292   |    PartNumber: 55276-US1   |   Asin: B01FE4NLM0

Features:

Material HSS
Color :Silver Tone
High Speed Steel
Standard 60 degree included angle
precision import
double ended

Specification:

This listing is for a set of 5 HSS Center Drills
Each drill has a double end and is ground with a standard 60 degree included angle
The set includes 1 each of the following sizes:
#1 with 3mm body diameter & 1mm drill tip diameter
#2 with 4mm body diameter & 1.5mm drill tip diameter
#3 with 6mm body diameter & 2.5mm drill tip diameter
#4 with 8mm body diameter & 3.15 drill tip diameter
#5 with 12mm body diameter & 5mm drill tip diameter

Usage:

Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking
Used for producing center holds in components or work pieces with require machining between centers

Package Included:

1x a set of 5 HSS Center Drills

Features

  • Material and Features: High-speed Steel, high hardness, rustproof, solid, durable and excellent for use.
  • Convenience: Easy to use and install, change bits fast which one-handed load and release.
  • Durable and Resistance: Center drill bit is made of HSS high speed steel, with extremely sharp blade, low consumption and durable with impact resistance, wear resistance.
  • Available for all Kinds of Materials: Metal, Alloy, Copper, Iron, Wood, Aluminum, and so on.
  • Wide Usages: Center drill bits can be used to make conical holes for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking, as well as for producing center holds in components or work pieces with require machining between centers.
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Brand: F.L.S   |   Manufacturer: FLS

Package Dimensions: 0.1 x 2.2 x 2.5 inches (0.3 x 5.6 x 6.4 cm)

Amazon Price: $6.59 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $6.99

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  #3

RedLine Tools - #4 Center Drill Carbide Combined Drill Countersink, AlTiN Finish, 2 Flute, 60 Point Angle, 2.1250 OAL - RC37204

 PartNumber: RC37204   |   Asin: B00PHXCQZC

Features

Brand: RedLine Tools   |   Manufacturer: RedLine Tools

Amazon Price: $32.68 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 2-3 business days
List Price: $32.68

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  #4

KEO 10000 High-Speed Steel Plain Combined Drill and Countersink Set, Uncoated (Bright) Finish, 60 Degree Point Angle, 1 - #5 Wire Sizes

Model: 10000   |    Mpn: 10000   |    PartNumber: 10000   |   Asin: B00946TNTU

Set includes #1, #2, #3, #4, #5 C'drills. This 5-piece set includes one piece each of the following plain type combined drill with a standard 60 degree included angle. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications.

Features

  • High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
  • 60 degree angle
  • Set includes #1, #2, #3, #4, #5 C'drills
  • This 5-piece set includes one piece each of the following plain type combined drill
  • See more on Amazon...

Brand: KEO Cutters   |   Manufacturer: Keo

Package Dimensions: 1.8 x 1.8 x 3.2 inches (4.6 x 4.6 x 8.1 cm)

Amazon Price: $53.29 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $58.62

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  #5

Proster Center Drill Mill Cutter 5 Pcs Combined Drill 6PCS HSS 4 Flute Straight End Mill Cutters

 Ean: 0757347418332   |    PartNumber: 43525-14447   |   Asin: B075KHL9ZR

Center drill High quality HSS Drill accurate center holes in material prior to turning, or use as a starter bit for accurate holes Sizes 1, 2, 3, 4 and 5, 60 tip angles. Mill Cutter Product Name : End Mill;Material : HSS Color : Gray 01:1/2"x1/2",Cutting Diameter:1/2", Cutting Depth:1.57", Shank Diameter:1/2" 02:1/4"x1/4",Cutting Diameter:1/4",Cutting Depth:1",Shank Diameter:1/4" 03:3/8"x3/8",Cutting Diameter:3/8",Cutting Depth:/1.7",Shank Diameter:3/8" 04:3/16"x1/4",Cutting Diameter:3/16",Cutting Depth:4/5",Shank Diameter:1/4" 05:5/16"x5/16",Cutting Diameter:5/16",Cutting Depth:1",Shank Diameter:5/16" 06:1/8"x1/4",Cutting Diameter:1/8",Cutting Depth:3/4",Shank Diameter:1/4" Suit for: Hardness of metal for above 30 degrees Package Content: 5 x center drill 6 x End Mill

Features

  • 5 Pcs HSS 60 Centering Drill & Countersink Bit: used as starter holes to prevent a drill bit from walking
  • 6 Pcs HSS 4 Flute End Mill Cutter:Suit for hardness of metal for above 30 degrees
  • Center Drill Bit Sizes: 1, 2, 3, 4 and 5, 60 tip angles;Material : HSS
  • Application:used for producing center holds in components or work pieces with require machining between center
  • Accurate center holes in material prior to turning, or use as a starter bit for accurate holes
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Brand: Proster   |   Manufacturer: Proster Trading Limited

Package Dimensions: 0.94 x 3.94 x 6.38 inches (2.4 x 10.0 x 16.2 cm)

Amazon Price: $15.99 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $15.99

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  #6

Cobra Carbide 31516 Micro Grain Solid Carbide Combined Drill Bit and Countersink, Uncoated (Bright) Finish, Round Shank, Spiral Flute, 60 Degrees Point, 2 Size, 1-7/8" Length (Pack of 1)

Model: 31516   |    Mpn: 31516   |    PartNumber: 31516   |   Asin: B00ECQUVJS

Cobra Carbide regular length combined drill bit and countersink is manufactured from premium submicron level carbide grain. Ideal for chamfering. Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems. Round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. 60 degrees point angle. Tolerance: H6 - shank diameter; H7 - cut diameter.

Features

  • Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
  • Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
  • Round shanks allow use with a wide variety of toolholding systems
  • When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • For centering and countersinking on NC and CNC machines
  • See more on Amazon...

Brand: Cobra Carbide   |   Manufacturer: Cobra Carbide

Package Dimensions: 0.5 x 0.6 x 2.6 inches (1.3 x 1.5 x 6.6 cm)

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  #7

Dormer A221N4 Centre Drill, Bright Coating, Cobalt High Speed Steel, 0.125" Head Diameter, 1/8" Flute Length

Model: 0241899   |    Mpn: A221N4   |    Ean: 7320760241899   |    PartNumber: A221N4   |   Asin: B003JY5ZJ0

The Dormer A221 series cobalt steel combined drill and countersink has an uncoated (bright) finish and a plain style to create a center hole with a 60-degree countersink that can be used as a center hole for machine centers, and meets United States Cutting Tool Institute (USCTI) standards. The 118-degree conventional point drills a center hole, while the two spiral flutes clear chips away to prevent clogging. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. The uncoated finish has no additional surface treatment or coating. The tool is double-ended to provide two cutting ends. The round shank accommodates most drill chucks.

Combined drill and countersinks are fluted cutting tools that drill a shallow hole with a conical or gradually widened opening, also known as a countersink, into the surface of a workpiece. These tools, also called combined drill countersinks, drill-point countersinks or center drills, are commonly used to create center holes that act as a bearing surface for a machine center. Some types reduce the two-step process of creating a countersunk pilot hole into one.

Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.

Features

  • Plain-style combined drill and countersink creates a 60-degree countersink, which can be used as a center hole for machine centers
  • 118-degree conventional point drills a center hole while the two spiral flutes clear chips away to prevent clogging
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials and has an uncoated (bright) finish
  • Double-ended to provide two cutting ends
  • Meets USCTI standards
  • See more on Amazon...

Brand: Dormer   |   Manufacturer: Precision Dormer

Package Dimensions: 0.51 x 0.51 x 2.99 inches (1.3 x 1.3 x 7.6 cm)

Amazon Price: $6.13 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $6.13

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  #8

Kodiak USA Made Size 4 Combination Drill and Countersink - Solid Carbide ALTIN Coated

Model: 118838   |    Mpn: KTC118838   |    PartNumber: KTC118838   |   Asin: B007BTSGTK

Size 4 Combination Drill and Countersink - Solid Carbide ALTIN Coated Combined Drill & Countersink - Carbide.

Features

Brand: Kodiak Cutting Tools   |   Manufacturer: Kodiak Cutting Tools

Package Dimensions: 0.4 x 0.4 x 3.1 inches (1.0 x 1.0 x 7.9 cm)

Amazon Price: $34.99 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $40.54

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  #9

6 Pcs Metric 60 Degree Lathe Mill HSS Center Drill Combined Countersinks Drill Bit

 Ean: 0601308125398   |    PartNumber: #1#2#3#4#5#6   |   Asin: B00Z6ZRWGE

#1 with 3mm body diameter & 1mm drill tip diameter #2 with 4mm body diameter & 1.5mm drill tip diameter #3 with 6mm body diameter & 2.5mm drill tip diameter #4 with 8mm body diameter & 3.15 drill tip diameter #5 with 10mm body diameter & 4mm drill tip diameter #6 with 12mm body diameter & 5mm drill tip diameter

Features

  • It includes 1 each of sizes #1, #2, #3, #4 and #5, #6.
  • 60 tip angles.
  • Drill accurate center holes in material prior to turning, or use as a starter bit for accurate holes
  • High Speed Steel. Standard 60 degree included angle
  • See more on Amazon...

Brand: Preamer   |   Manufacturer: Preamer

Amazon Price: $6.89 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 1-2 business days
List Price: $6.89

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  #10

HSS Center Drill Set 60 Degree Combined Countersink #1,2,3,4,5 Machinist

 Ean: 0644607331879   |   Asin: B014LQM0VK


-5 PC Center drill set
-Straight flute
-Size: #1 - 5
-#1 center drill with 1/8" body diameter & 3/64" drill tip diameter & 1-1/4" overall length
-#2 center drill with 3/16" body diameter & 5/64" drill tip diameter & 1-7/8" overall length
-#3 center drill with 1/4" body diameter & 7/64" drill tip diameter & 2" overall length
-#4 center drill with 5/16" body diameter & 1/8" drill tip diameter & 2-1/8" overall length
-#5 center drill with 7/16" body diameter & 3/16" drill tip diameter & 2-3/4" overall length
-Made of premium M2 High Speed Steel and ground finished, set comes complete with plastic case or wooden case holding all 5 center drills
-Plain style 60 angle used for producing center holes in workpieces which require precision drilling or machining between centers. Also used as starter holes to prevent a drill bit from "walking"

Features

  • 5 PC Center drill set
  • Straight flute
  • Size: #1 - 5
  • Shipping weight: 4 ounce
  • Quantity: 1 set (5 pc per order)
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Brand: Generic   |   Manufacturer: Generic

Amazon Price: $9.99 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $9.99

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  #11

Countersink, 3 FL, 100 Deg, 3/8, HSS

 PartNumber: 50380   |   Asin: B001D1HZ3K

'Center Reamer, Single Ended, Number of Pieces -, Number of Flutes 3, Included Angle (Deg.) 100, Cutting Capacity (In.) -, Pilot Dia. (In.) -, Pilot Length (In.) -, Body Dia. (In.) 3/8, Shank Dia. (In.) 1/4, Shank Length (In.) 7/8, Overall Length (In.) 1-3/4, High Speed Steel, Uncoated Finish, For Cast Iron, Heat-Treated Steels, Titanium Alloys, Plastic And Wood, Sizes Included -'

Features

  • Price For: Each Sizes Included: - Number of Pieces: - Finish: Uncoated Item: Countersink Pilot Dia. (In.): - Material: High Speed Steel Number of Flutes: 3 Pilot Length (In.): - Cutting Capacity (In.): - Type: Single Ended Application: For Cast Iron, Heat-Treated Steels, Titanium Alloys, Plastic And Wood Included Angle (Deg.): 100 Shank Length (In.): 7/8
  • Shank Dia. (In.): 1/4 Overall Length (In.): 1-3/4 Body Dia. (In.): 3/8 Country of Origin (subject to change): United States
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Brand: KEO   |   Manufacturer: KEO

Amazon Price: $16.65 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 1-2 business days
List Price: $16.65

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  #12

Dormer A221N1 Centre Drill, Bright Coating, Cobalt High Speed Steel, 0.0469" Head Diameter, 3/64" Flute Length

Model: 0241868   |    Mpn: A221N1   |    Ean: 7320760241868   |    PartNumber: A221N1   |   Asin: B003JZCS9E

The Dormer A221 series cobalt steel combined drill and countersink has an uncoated (bright) finish and a plain style to create a center hole with a 60-degree countersink that can be used as a center hole for machine centers, and meets United States Cutting Tool Institute (USCTI) standards. The 118-degree conventional point drills a center hole, while the two spiral flutes clear chips away to prevent clogging. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. The uncoated finish has no additional surface treatment or coating. The tool is double-ended to provide two cutting ends. The round shank accommodates most drill chucks.

Combined drill and countersinks are fluted cutting tools that drill a shallow hole with a conical or gradually widened opening, also known as a countersink, into the surface of a workpiece. These tools, also called combined drill countersinks, drill-point countersinks or center drills, are commonly used to create center holes that act as a bearing surface for a machine center. Some types reduce the two-step process of creating a countersunk pilot hole into one.

Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.

Features

  • Plain-style combined drill and countersink creates a 60-degree countersink, which can be used as a center hole for machine centers
  • 118-degree conventional point drills a center hole while the two spiral flutes clear chips away to prevent clogging
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials and has an uncoated (bright) finish
  • Double-ended to provide two cutting ends
  • Meets USCTI standards
  • See more on Amazon...

Brand: Dormer   |   Manufacturer: Precision Dormer

Package Dimensions: 0.3 x 0.3 x 4 inches (0.8 x 0.8 x 10.2 cm)

Amazon Price: $10.74 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 3 to 5 days
List Price: $10.74

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  #13

Kodiak USA Made Size 2 Combination Drill and Countersink - Solid Carbide

Model: 118787   |    Mpn: KTC118787   |    PartNumber: KTC118787   |   Asin: B0070YYD8E

Size 2 Combination Drill and Countersink - Solid Carbide Combined Drill & Countersink - Carbide.

Features

Brand: Kodiak Cutting Tools   |   Manufacturer: Kodiak Cutting Tools

Package Dimensions: 0.31 x 0.31 x 1.88 inches (0.8 x 0.8 x 4.8 cm)

First Available: 2017-03-12

Amazon Price: $20.33 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 1-2 business days
List Price: $20.33

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  #14

Dormer A221N3 Centre Drill, Bright Coating, Cobalt High Speed Steel, 0.1094" Head Diameter, 7/64" Flute Length

Model: 0241882   |    Mpn: A221N3   |    Ean: 7320760241882   |    PartNumber: A221N3   |   Asin: B003JY5ZI6

The Dormer A221 series cobalt steel combined drill and countersink has an uncoated (bright) finish and a plain style to create a center hole with a 60-degree countersink that can be used as a center hole for machine centers, and meets United States Cutting Tool Institute (USCTI) standards. The 118-degree conventional point drills a center hole, while the two spiral flutes clear chips away to prevent clogging. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. The uncoated finish has no additional surface treatment or coating. The tool is double-ended to provide two cutting ends. The round shank accommodates most drill chucks.

Combined drill and countersinks are fluted cutting tools that drill a shallow hole with a conical or gradually widened opening, also known as a countersink, into the surface of a workpiece. These tools, also called combined drill countersinks, drill-point countersinks or center drills, are commonly used to create center holes that act as a bearing surface for a machine center. Some types reduce the two-step process of creating a countersunk pilot hole into one.

Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.

Features

  • Plain-style combined drill and countersink creates a 60-degree countersink, which can be used as a center hole for machine centers
  • 118-degree conventional point drills a center hole while the two spiral flutes clear chips away to prevent clogging
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials and has an uncoated (bright) finish
  • Double-ended to provide two cutting ends
  • Meets USCTI standards
  • See more on Amazon...

Brand: Dormer   |   Manufacturer: Precision Dormer

Package Dimensions: 0.51 x 0.51 x 4.02 inches (1.3 x 1.3 x 10.2 cm)

Amazon Price: $10.84 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $10.84

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  #15

Kodiak USA Made Size 3 Combination Drill and Countersink - Solid Carbide

Model: 118798   |    Mpn: KTC118798   |    PartNumber: KTC118798   |   Asin: B0070YYDFM

Size 3 Combination Drill and Countersink - Solid Carbide Combined Drill & Countersink - Carbide.

Features

Brand: Kodiak Cutting Tools   |   Manufacturer: Kodiak Cutting Tools

Package Dimensions: 0.2 x 0.5 x 3.1 inches (0.5 x 1.3 x 7.9 cm)

Amazon Price: $21.74 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 1-2 business days
List Price: $21.74

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  #16

RedLine Tools - #3 Center Drill Carbide Combined Drill Countersink, AlTiN Finish, 2 Flute, 60 Point Angle, 2.0000 OAL - RC37203

 PartNumber: RC37203   |   Asin: B00PHXCQBQ

Features

Brand: RedLine Tools   |   Manufacturer: RedLine Tools

Amazon Price: $25.29 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 2-3 business days
List Price: $25.29

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  #17

KEO 53129-01 Single Flute Countersink, High Speed Steel, 90 Degree Cutting Angle, 1/2" Body Diameter

Model: 53129-01   |    Mpn: 53129-01   |    PartNumber: 53129-01   |   Asin: B00KTTQB82

KEO single flute countersinks are ideal for chamfering, deburring and countersinking.

Features

  • The versatility of this tool should increase productivity on all general purpose applications
  • The large positive rake and single flute construction provides a smooth surface finish on a wide variety of materials
  • Single flute countersinks
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Brand: KEO Cutters   |   Manufacturer: Keo

Item Dimensions: 0.5 x 1.7 x 5.5 inches (1.3 x 4.3 x 14.0 cm)   |   Package Dimensions: 0.5 x 2.2 x 6 inches (1.3 x 5.6 x 15.2 cm)

Amazon Price: $14.81 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 1-2 business days
List Price: $17.61

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  #18

Dormer A221N5 Centre Drill, Bright Coating, Cobalt High Speed Steel, 0.1875" Head Diameter, 3/16" Flute Length

Model: 0241905   |    Mpn: A221N5   |    Ean: 7320760241905   |    PartNumber: A221N5   |   Asin: B003JY5ZJU

The Dormer A221 series cobalt steel combined drill and countersink has an uncoated (bright) finish and a plain style to create a center hole with a 60-degree countersink that can be used as a center hole for machine centers, and meets United States Cutting Tool Institute (USCTI) standards. The 118-degree conventional point drills a center hole, while the two spiral flutes clear chips away to prevent clogging. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. The uncoated finish has no additional surface treatment or coating. The tool is double-ended to provide two cutting ends. The round shank accommodates most drill chucks.

Combined drill and countersinks are fluted cutting tools that drill a shallow hole with a conical or gradually widened opening, also known as a countersink, into the surface of a workpiece. These tools, also called combined drill countersinks, drill-point countersinks or center drills, are commonly used to create center holes that act as a bearing surface for a machine center. Some types reduce the two-step process of creating a countersunk pilot hole into one.

Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.

Features

  • Plain-style combined drill and countersink creates a 60-degree countersink, which can be used as a center hole for machine centers
  • 118-degree conventional point drills a center hole while the two spiral flutes clear chips away to prevent clogging
  • Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials and has an uncoated (bright) finish
  • Double-ended to provide two cutting ends
  • Meets USCTI standards
  • See more on Amazon...

Brand: Dormer   |   Manufacturer: Precision Dormer

Package Dimensions: 0.7 x 0.7 x 4.8 inches (1.8 x 1.8 x 12.2 cm)

Amazon Price: $9.42 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 3 to 5 days
List Price: $12.59

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  #19

KEO #1 Combined Drill & Countersink - Plain HSS RH 60 deg Plain

 PartNumber: 10100   |   Asin: B0034KY6D0

KEO plain type combined drill and countersinks are used for producing center holes in components or workpieces which require machining between centers.

Brand: KEO Cutters   |   Manufacturer: Keo

Item Dimensions: 1 x 1 x 2 inches (2.5 x 2.5 x 5.1 cm)   |   Package Dimensions: 0.5 x 1.75 x 2.13 inches (1.3 x 4.4 x 5.4 cm)

Amazon Price: $5.09 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 24 hours
List Price: $5.09

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  #20

RedLine Tools - #5 Center Drill Carbide Combined Drill Countersink, Uncoated Finish, 2 Flute, 60 Point Angle, 2.7500 OAL - RC27305

 PartNumber: RC27305   |   Asin: B00PHXMMC4

Features

Brand: RedLine Tools   |   Manufacturer: RedLine Tools

Amazon Price: $41.42 | as of 03/24/2019(7:12am pst)
Availibility: Usually ships in 2-3 business days
List Price: $41.42

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