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HSS Step Drill Bit, 3/16-7/8 In, Step 1/16

IRWIN UNIBIT

Price: $45.55 / each

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Typically in Stock
4.0 Stars
4.0 of 5
  • Item # 6A922
  • Mfr. Model # UNIBIT 4
  • NSN # 5133-01-372-2312
  • UNSPSC # 27112801
  • Catalog Page # 960
  • Shipping Weight 0.2 lbs.
Country of Origin USACountry of Origin is subject to change.

Technical Specs

  • ItemStep Drill Bit
  • Shank Size3/8"
  • Number of Hole Sizes12
  • Size3/16 to 7/8"
  • Step Thickness1/16"
  • MaterialHigh Speed Steel
  • DesignEnsures True Starts Without Walking Even on Curved Surfaces

Compliance and Restrictions

None

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Rated 4 out of 5 by 1reviewer.
Rated 4 out of 5 by These are great bits for making larger holes in mild steel and plastic. If you're making large holes in stainless steel, I suggest you get the cobalt version of it, though. I ruined one making a hole in a piece of stainless plate, even with plenty of lubrication while drilling it. May 6, 2014
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Product Q&A

(1 Question : 1 Answer)

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If not, What type of bit does go into glass?
Field of Industry:: Teacher
Product used for:: Drilling into glass block
Years purchasing from Grainger:: 20
2 years ago
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Answers

Answer: 
No. Step drill bits like this one are designed for drilling in fairly thin metal. (Thinner than the step depth.)

For a glass block, you are going to want to use a drill bit that is specified as a glass / ceramic drill bit, such as 3AEE2.

One thing I can tell you from experience, you will want the glass you are drilling to be under water if at all possible. That way you will keep the drill bit cool and lubricated (both are very important), and if you accidentally shatter the glass you are drilling, then the shards won't fly everywhere.

Also, take your time.

Glass and ceramic drill bits use an abrasive to rub their way through the work, as opposed to cutting, like traditional drill bits do, so they are more susceptible to heat build up.
Age: 25 to 34
2 years ago
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The source for the answers given by Grainger in Ask and Answer are based on the information provided with the question, which may not be complete or may not apply to other situations, and based on product literature and informational materials, the content of which is provided by Grainger's product suppliers. Grainger disclaims liability for any information it provides in Ask and Answer which later may be alleged or determined by a court of law to be inaccurate or incorrect.

The answers given by Grainger in Ask and Answer are not intended to replace or supplement any professional, engineering or other consultation services available to its product users. Always read, understand, and follow the product information and instructions provided by the manufacturer. same on category AAA as well