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Model # CST1

Internet #203530165

Bosch 1/2 in. Titanium Countersink Drill Bit
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Bosch

1/2 in. Titanium Countersink Drill Bit

  • Ideal for electrical, plumbing and HVAC contractors
  • Sharpening the cutting edges extends bit life
  • Superior cutting in iron, steel, soft metal, plastic and wood
$ 10 97
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Frequently Bought Together

Frequently Bought Together

Product Overview

  • Ideal for electrical, plumbing and HVAC contractors
  • Sharpening the cutting edges extends bit life
  • Superior cutting in iron, steel, soft metal, plastic and wood
The self-starting point and five-fluted design on the Bosch 1/2 in. Titanium Countersink allow it to make clean, accurate cuts in even the toughest materials. It leaves smooth, burr-free edges on soft metal, steel, iron, wood and plastic with an 82-degree chamfer that creates a snug resting place for countersunk screw heads. Constructed with high-speed steel and coated with super-hard titanium, this bit has the durability to withstand high-heat conditions for lasting use.
  • Perfect for de-burring holes and countersinking holes for flush or countersunk screw heads
  • Titanium coating reduces heat for balanced performance and longer life
  • Fluted design inhibits chatter and vibration for smooth operation
  • Produces a clean, burr-free edge

Product Overview

  • Ideal for electrical, plumbing and HVAC contractors
  • Sharpening the cutting edges extends bit life
  • Superior cutting in iron, steel, soft metal, plastic and wood
Model #: CST1
Internet #: 203530165

The self-starting point and five-fluted design on the Bosch 1/2 in. Titanium Countersink allow it to make clean, accurate cuts in even the toughest materials. It leaves smooth, burr-free edges on soft metal, steel, iron, wood and plastic with an 82-degree chamfer that creates a snug resting place for countersunk screw heads. Constructed with high-speed steel and coated with super-hard titanium, this bit has the durability to withstand high-heat conditions for lasting use.

  • Perfect for de-burring holes and countersinking holes for flush or countersunk screw heads
  • Titanium coating reduces heat for balanced performance and longer life
  • Fluted design inhibits chatter and vibration for smooth operation
  • Produces a clean, burr-free edge

Specifications

Dimensions

Assembled Depth (in.)
.5 in
Assembled Height (in.)
5.937 in
Assembled Width (in.)
1.875 in
Bit Diameter
1/2 in
Bit Length (in.)
3
Shank Diameter
1/4 in

Details

Bit Material
Titanium
Drill Bit Type
Countersink
Drill Bit Type(s) Included
Countersink
Individual/Set
Individual
Material Application
Wood
Returnable
90-Day
Self-Feeding
No
Shank Style
Straight
Shank Style
Straight
Tools Product Type
Power Tool

Specifications

Dimensions

Assembled Depth (in.)
.5 in
Assembled Height (in.)
5.937 in
Assembled Width (in.)
1.875 in
Bit Diameter
1/2 in
Bit Length (in.)
3
Shank Diameter
1/4 in

Details

Bit Material
Titanium
Drill Bit Type
Countersink
Drill Bit Type(s) Included
Countersink
Individual/Set
Individual
Material Application
Wood
Returnable
90-Day
Self-Feeding
No
Shank Style
Straight
Shank Style
Straight
Tools Product Type
Power Tool

Questions & Answers

How well will this bit work on concrete board,how long would it last.

Asked by: Bear
I have used this on HardieBacker and re-pointed, then continued to use. Nothing holds up to concrete for any period of time without severe wear and dulling. If you want to counter sink, use Backer-on screws with a good impact driver. We now have a good impact driver and it is a breeze to flush out the Backer-on screws into the HardieBacker.
Answered by: Beardedone
Date published: 2018-09-11

Will it work well for deburring holes in stainless steel

Asked by: Luke
I would use it for deburring but, I would not use it for countersinking.
Answered by: Jerry
Date published: 2018-04-28

Will is countersink regular steel?

I have no experience with this. I already damaged some cheap 1 flute countersinking bits.
Asked by: Kaewaz
Yes, but keep the rpm's low as it heats up the steel and bit quickly.
Answered by: Jerry
Date published: 2018-04-28

Is the point on this item 82 degrees or 90 degrees?

Asked by: mick
The point on this is 82 degrees with five flutes.
Answered by: Beardedone
Date published: 2018-09-11
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Customer Reviews

1/2 in. Titanium Countersink Drill Bit is rated 4.7 out of 5 by 14.
Rated 5 out of 5 by from Versatile Countersink I purchased the CST1,2 & 3 for general countersink applications.  I used them in hardwood, softwood and metal.  They performed better than expected making clean cuts in the woods and the same in the metal leaving no burrs.  The 5 flute design helps with the clean edges I am sure.  There was no evidence of any wear after putting them through their paces.  Although they can also be used to ream the ends of pipe and metal conduit to eliminate burrs, I did not try this.  I have no hesitation recommending these countersinks.  
Date published: 2014-03-26
Rated 5 out of 5 by from By far, this countersink has outlasted all other brands hand down. I have utilized this countersi... By far, this countersink has outlasted all other brands hand down. I have utilized this countersink to bore material that the bit should not be used for and it has outlasted any other bit I have tried. I have even re-pointed and continued to use this bit when any other bit has nothing left to sharpen or re-point.
Date published: 2018-09-11
Rated 5 out of 5 by from Very Durable I needed to counter sink multiple holes in steel plate. This product accomplished the job perfectly and did not seem to wear suggesting that it will be usable for years to come.
Date published: 2014-08-12
Rated 5 out of 5 by from Very clean, did not leave any burrs or slivers. I used this bit to drill some sunken holes in a 1/8" steal plate. The holes were nice and clean with no steal burrs or slivers around the edges. The bit does not look much warn after 16 holes were drilled. Very nice bit.
Date published: 2015-01-21
Rated 5 out of 5 by from Works like it was designed.... Works like it was designed.
Date published: 2018-10-09
Rated 5 out of 5 by from Countersink This is exactly what I was looking for to countersink some hole in 5/16" steel. Product did great.
Date published: 2014-02-18
Rated 5 out of 5 by from This is a well made product. I use it to smooth off the rough shoulder created by drilling holes ... This is a well made product. I use it to smooth off the rough shoulder created by drilling holes in metal and also to debur the inside mouth of cartridge cases after trimming. It fits in a 1/4 inch drill chuck so I can use my lightweight cordless drill. Oh yeah, you can use it like a countersink also!
Date published: 2018-02-06
Rated 5 out of 5 by from Great Countersink drill Drill was purchased to counter sink a latch plate that was on a Delta shower door which came with a non-countersunk hole on both sides of the door latch. Delta made a mistake and I had to correct if myself. At least it worked to keep the screws away from the edge of my glass door. They said they would reimburse me but so far nothing has arrived.
Date published: 2016-08-09
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