Model # 6758

Internet #100392633

RIDGID 3/16 in. Cobalt Drill Bit
0035781018111

Discontinued RIDGID

3/16 in. Cobalt Drill Bit

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Product Overview

The RIDGID 3/16 in. Cobalt Drill Bit is designed for drilling in metals and is made with the proprietary CG Power process for speed, strength and durability. The 143° split point cuts on contact.

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Customer Questions & Answers

4 Questions6 Answers

Customer Questions & Answers

3/16 in. Cobalt Drill Bit
3/16 in. Cobalt Drill Bit

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This question is from 1/2 in. Cobalt Drill Bit
 
1 answer

Can this bit drill through 304SS?

This question is from 1/2 in. Cobalt Drill Bit
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July 17, 2015
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Answer (1)

Asked by
Cabot Arkansas
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Home Improvement Profile: DIYer
August 25, 2015
Answer: 
Yes...if you pre-drill a 16th hole first. A drill press works best with slow constant pressure. Lube oil every 15 seconds. High speeds will cause your SS to tarnish and the bit will cook then ruin...slow is good!
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This question is from 1/8 in. Cobalt Drill Bit
 
1 answer

How long is the drill bit supposed to be, and how long is it?

This question is from 1/8 in. Cobalt Drill Bit
Asked by
Cynical1
South Carolina
July 5, 2013
RIDGID 1/8 in. Cobalt Drill Bit Model # 6754 Internet # 100389572 Store SKU # 585485
Even with packaging, the drill bit is NOT 6.875 inches long.
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July 10, 2013
Answer: 
The company that handles the drill bits you are looking for is Disston. Their phone number is 800-446-8890.
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This question is from 5/16 in. Cobalt Drill Bit
 
2 answers

I need large quantities of these and will need to keep in stock regular monthly usage will be around 50. Please let me know the easiest way to do this

This question is from 5/16 in. Cobalt Drill Bit
Asked by
Big Country
Houston Texas
October 10, 2012
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Asked by
Aromas, CA
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Home Improvement Profile: DIYer
February 3, 2015
Answer: 
I would contact your local H.D. store Pro-Services department regarding bulk purchasing rather than requesting they carry that large amount available in-store for you to buy as needed.
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Asked by
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October 16, 2012
Answer: 
This is something you would have to ask a distributor about. If you do not have a local distributor go to http://www.ridgid.com/Tools/Where-To-Buy/ and it will pull up who is in your area.
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This question is from 1/4 in. Cobalt Drill Bit
 
2 answers

will this bit drill through cement??????////////

This question is from 1/4 in. Cobalt Drill Bit
Asked by
papa
June 27, 2012
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Asked by
Louisiana, USA
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November 26, 2012
Answer: 
There are specialty cement bits and roto hammer drills, they pretty much go through everything from bricks to very hard slab concrete.
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June 28, 2012
Answer: 
We would not recommend a cobalt bit for cement. We would suggest using a masonry drill bit for cement.
Thank you
RIDGID Support
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Customer Reviews

Rated 4.0 out of 5 by 65 reviewers.
Rated 5.0 out of 5.0 by Finest Drill Bits These cryo treated cobalt drill bits are fantastic. I had a project that had a lot of rivets into 1/8" steel and 26 gauge sheet metal. I started the project with a TiN bit, thinking it would do the job, way too much work. These holes I made were drilled with a corded drill, free hand, standing and kneeling and in awkward positions, so it was hard to keep the drill aligned. After four holes with the TiN bit, I switched to this bit. Over 300 holes later, I was still getting curls, the bit was showing a little wear, but holes were made quickly. If you have to drill metal, use these bits... October 6, 2015
Rated 2.0 out of 5.0 by Hit or miss The quality of the bit was hit or miss. I bought several of the bits because I was drilling 100+ holes through 1/4" steel columns. The first bit worked like a charm, cut over 70 holes before dulling the bit. To finish the project I had to open three more packages to get a second bit that worked as well as the first. Product works great when it works, but it appears that there are quality control issues. February 17, 2015
Rated 4.0 out of 5.0 by Drills through rebar I was using a 7/16 inch drill bit to drill 8 holes into concrete with rebar. The package suggested it was good for that. It was not. It burned up when it hit the first piece of rebar in the first hole. See picture. Then I got a Dewalt 7/16 inch Titanium bit that was supposed to drill through concrete and rebar. It dulled as soon as soon as it hit the rebar. Then I got a Bosch Xtreme SDS hammer 1/2 inch drill bit for the concrete and rebar. I stopped when it hit the rebar. Then I used this Rigid Cobalt 1/2 inch bit and stopped when it went through the rebar. I don't know if the Dewalt is still good or not as I may never drill a 1/2 inch hole in concrete again. It drilled through the concrete, but stopped immediately when I hit the rebar. It drilled through 6 pieces of rebar with the Rigid, but I didn't push it when it hit the concrete. I don't know if this Rigid is still good or not. I don't know when I will ever need a 1/2 inch hole in any steel again. I will keep it and find out someday. October 13, 2015
Rated 5.0 out of 5.0 by Great product, why discontinue? One 3/.16" bit drilled over eighty holes in 1/2" steel and it's still sharp enough to drill more. Used it with the Oatey dark cutting oil and variable speed hand drill. Worked like a champ. Would highly recommend. I hope that whatever they are replacing it with lasts as long and works as well. Just in case, I bought three more! September 3, 2014
Rated 5.0 out of 5.0 by Went through metal! We used to drill through an old exterior locking doorknob. Worked great! December 30, 2014
Rated 1.0 out of 5.0 by returned pretty quick bought a set of ridgid cobalt bits on clearance at home depot to install some hardware on doors at a church here in town. i tried to drill through a push plate for a bolt using a 3\8 bit. all it did was spin. ive read how far superior cobalt bits are to titanium but now because of this purchase I am skeptical. February 11, 2016
Rated 4.0 out of 5.0 by 1/2 in. Cobalt Drill Bit It did what I wanted it to do without any problems. November 12, 2015
Rated 1.0 out of 5.0 by 1/2" Rigid Cobalt Drill bit - One star for one hole I bought this bit to finish drilling 4 holes in 1/4" steel tubing. I had already drilled up through 7/16" so this bit only needed to remove 1/16" of steel. It cut the first hole quickly, then wouldn't cut the other three. I resharpened the bit a total of 6 times to finish the other three holes - tough since it's ground at 142 deg instead of a more standard 135 deg. I kept the bit at low speed and used cutting oil but most of the time the bit just spun. I had to angle the bit repeatedly to get any cutting action, which left the hole pretty ragged. It took almost two hours to finish 3 holes. Other reviewers reported this as a hit-or-miss drill bit. It was a total miss for me. The Chinese quality control process needs much improvement. June 6, 2015
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