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Milwaukee Tool 1/4-inch Cobalt Red Helix Twist Drill Bit

Model # 48-89-2313|Store SKU # 1000657025

Overview

Model # 48-89-2313 Store SKU # 1000657025

The Milwaukee 48-89-2313 1/4 -Inch Thunderbolt Cobalt drill bits are designed for extreme durability and long life in specialty applications. The Thunderbolt web features a thicker core than a standard drill bit, which provides ultimate strength and protects against side-load breakage. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool. A precision start, 135-split Point tip starts on contact to keep the bit from walking for fast accurate holes. Excellent for drilling on curved surfaces, requires less effort to drill and is highly recommended for use with portable drills.

  1. 135° split point, precision start (no walking)
  1. Extended length for hard to reach areas
  1. Specialty bit for cast iron and stainless steel
  1. 3-flat secure grip shank reduces bit slipping in chuck
  1. Variable helix design for fast material removal
  1. Chip breaker decreases heat build up
  1. Stays sharper longer
  1. Includes: (1) 1/4-inch Cobalt Red Helix Twist Drill Bit

Specifications

Dimensions

Assembled Depth (in inches)
0.02
Assembled Height (in inches)
1.5
Assembled Weight (in lbs)
6.9
Assembled Width (in inches)
0.3
Packaged Depth (in inches)
1.87
Packaged Height (in inches)
0.27
Packaged Weight (In lbs)
0.05
Packaged Width (in inches)
5.75

Details

Arbor Included
No
Bit Diameter (In.)
1, 1/4
Bit Length (In.)
4
Bit Material
Cobalt
Certified
Yes
Country of Origin
CN-China
Drill Bit Type
Hammer Drill Bit
Individual/Set
Individual
Material Application
Wood and Metal
Number of Pieces in Set
1
Power Source
Cordless
Power Tool Accessory Features
Universal
Power Tool Accessory Type
Twist Drill Bits
Shank Diameter (In.)
1/4
Shank Type
3-Flat
Tip Material
Cobalt

Warranty / Certifications

Tel #: 1-800-628-0525
1/4-inch Cobalt Red Helix Twist Drill BitMilwaukee Tool 1/4-inch Cobalt Red Helix Twist Drill BitThe Milwaukee 48-89-2313 1/4 -Inch Thunderbolt Cobalt drill bits are designed for extreme durability and long life in specialty applications. The Thunderbolt web features a thicker core than a standard drill bit, which provides ultimate strength and protects against side-load breakage. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool. A precision start, 135-split Point tip starts on contact to keep the bit from walking for fast accurate holes. Excellent for drilling on curved surfaces, requires less effort to drill and is highly recommended for use with portable drills.
Milwaukee Tool
1000657025
CAD14.76
The Home Depot Canada
1/4-inch Cobalt Red Helix Twist Drill Bit is rated 4.0 out of 5 by 265.
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Rated 2 out of 5 by from Supposed to be harder but did not hold up very... Supposed to be harder but did not hold up very long at. Became dull within the first 1 minute of drilling into thin metal.
Date published: 2021-08-27
Rated 5 out of 5 by from I needed a drill bit to penetrate a steel part... I needed a drill bit to penetrate a steel part I was fixing and it did the job with ease.
Date published: 2021-07-23
Rated 4 out of 5 by from The best driller bit... The best driller bit
Date published: 2021-07-23
Rated 5 out of 5 by from I needed to drill a hole in the metal bed... I needed to drill a hole in the metal bed post in order to attach a headboard. It did the job.
Date published: 2021-07-10
Rated 1 out of 5 by from Hard Metal- Hard To Drill Through Metal This might be a longer life option for mild steel. For hard metal look elsewhere. My local hardware store stocks the Irwin Cobalt bits and those work.
Date published: 2021-06-13
Rated 5 out of 5 by from Rating provided by a verified purchaser... Rating provided by a verified purchaser
Date published: 2021-06-13
Rated 5 out of 5 by from Drilled out my lock with ease Drilled out my lock with ease
Date published: 2021-06-02
Rated 4 out of 5 by from Rating provided by a verified purchaser... Rating provided by a verified purchaser
Date published: 2021-05-19
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Will this drill 3/16" Inconel ?

Will this drill 3/16" Inconel ?
Asked by: VentINstaller
O.25
Answered by: Roy
Date published: 2021-07-23

will this bit drill thru 1018 steel at a 1/4 inch thick?

will this bit drill thru 1018 steel at a 1/4 inch thick?
Asked by: bobbyS
Yes
Answered by: Sammy
Date published: 2020-12-12

Will this bit drill stainless steel

Asked by: Jim
It would not drill through a Barclay Forge stainless steel meat cleaver, I pushed down so hard the metal snapped in 2.
Answered by: boatworks
Date published: 2020-11-27

Will these last longer drilling aluminum? Or would they be overkill for aluminum?

Just wondering if these are worth the extra cost vs black oxide?
Asked by: Cbus1992
Should be fine. As a matter of fact I believe that most if these drill bits are mostly intended to be use in wood and aluminum as a matter of practicality; anything else is a matter of you get what you pay for.
Answered by: Archy
Date published: 2020-03-31

What is the max rpm for this bit?

Asked by: Cbus1992
Don't be rediculous. Ehen bbnit comes to drill bits an particular answer comes to mind. A good rule of thumb is as follows. Nog all drills are the same if you are using a self locking type of drill this kind of drill can only be used to a certain degree of treshold . What do I mean..they all have a limit by which the drill bit can be tighten so therefore your hand can only tighten the bit so much now if you use the one with the key you may be talking a different level of speed and strength given to the job that may be involved. That's what I mean. So perhaps this rule of thumb can be a little more helpfull. Still most drklls as well as drill bits can function within the range of 10 to 10 thousand RPM but it means nothing if the end user has no clue.
Answered by: Archy
Date published: 2021-05-05

what is the best drill bit for drilling holes in cast iron?

I need to drill new slots at 22.5 degrees from the origional slots so I can bolt down a new corner toilet in a very small bath room.
Asked by: proudeplorable
I mounted a remodeling toilet flange because I added a 3/4" subfloor. I drilled the existing cast iron flange to mount the new flange. A 1/4" cobalt bit drilled the cast iron easily. You need to slow your drill spindle speed and let the bit do the work. Excessive feed force will snap a cobalt drill bit resulting in a broken bit stub stuck in the cast iron. Your project is very common and very "doable".
Answered by: MarkT
Date published: 2019-10-22
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