Milwaukee 3/8 in. Thunderbolt Cobalt Twist Drill Bit
$15.40
Perform nailing and drilling works effortlessly with the help of this excellent Milwaukee Thunderbolt Cobalt Drill Bit. Ideal for any modern home.
In stock
Description
The MILWAUKEE RED HELIX Cobalt 3/8 in. Drill Bit are engineered for extreme durability and longer life in hard metal applications. The Milwaukee Cobalt drill bits are designed with a VARIABLE HELIX that includes an aggressive 35° Helix Angle which ends at 15°. The drill bits have QUADEDGE TIP to decrease heat buildup and drill faster. The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes in Hard Metal, PVC and wood.The tapered drill bits feature a new ENHANCED TAPERED WEB that strengthens the bit’s core to increase flute durability. The cobalt twist drill bits are ideal for tough applications, providing up to 15X life vs. Black Oxide Drill Bits.
- Cobalt alloy for up to 15x life vs. black oxide drill bits
- QUADEDGE TIP designed to decrease heat build up and drill faster
- ENHANCED TAPERED WEB strengthens the bits core
- VARIABLE HELIX Design for rapid material extraction
- 135° split point for precision start no walking
- 3-Flat Secure-Grip helps keep the bit fixed within the the chuck
- Designed for hard metals, PVC and wood
Additional information
| Weight | 0.1 lbs |
|---|---|
| Dimensions | 6.75 × 0.38 × 1.88 in |
| Assembled Depth (in.) | 3/8 in |
| Assembled Height (in.) | 3/8 in |
| Assembled Width (in.) | 5.12 in |
| Bit Diameter | 3/8 in |
| Bit Length (in.) | 5 |
| Bit Material | Cobalt |
| Drill Bit Type | Twist |
| Drill Bit Type(s) Included | Twist |
| Individual/Set | Individual |
| Material Application | Aluminum, Cast Iron, Duct/Sheet Metal, Stainless Steel, Steel |
| Model | 48-89-2321 |
| Self-Feeding | No |
| Shank Diameter | 3/8 in |
| Shank Style | 3-Flat |
| Tools Product Type | Power Tool |
Reviews (60)
60 reviews for Milwaukee 3/8 in. Thunderbolt Cobalt Twist Drill Bit
Only logged in customers who have purchased this product may leave a review.
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Mckayla Tromp (verified owner) –
Excellent drill bit for hard metal!
Madonna Hackett (verified owner) –
This drill bit stayed sharp to drill all the holes for the bolts that would attach new slats to my lawn furniture .Yea!
Jan Keeling (verified owner) –
Wow. Powered through the steel like wood. Great addition into my toolbox.
Everette Hills (verified owner) –
They are really hard steel to work on hard to bore metals. Good stuff
Neva Ondricka (verified owner) –
It successfully completed the task that i had purchased it for.
Cecilia Kuhn (verified owner) –
Its an odd size but needed it for my application. Cobalt bit should last for a long time
Claud Rosenbaum (verified owner) –
Great drill. A little proces but it went through 3/16″ mild steel like butter without having to drill a bunch of sequentially larger pilot holes.
Stefan Harber (verified owner) –
I have doors that are made from recycled wood. I tried to drill holes through the door with a cheap-o drill bit I had and it took over 10 minutes to get one hole drilled. I bought this drill bit, and it turned that time into 10 seconds per hole. I wish I had purchased this before making the first hole.
Jennyfer Weissnat (verified owner) –
bought this to drill a hole into an Elfa support bracket. Took a little time, but the bit didn’t overheat or break.
Ila Gorczany (verified owner) –
This is what millwaukie is made of true precision and durability that outlasts the competitor’s while saving money is always good spending a little more will save you time and the worry free name like Milwaukee you won’t be let down
Filomena Schulist (verified owner) –
Have multiple cobalt bits for drilling stainless on boats, work great last until I break them.
Ellis Jenkins (verified owner) –
Strong drill bit. Works great on metal and last a long time.
Burnice Lang (verified owner) –
Good drill bit. Exactly as expected.
Chaya Casper (verified owner) –
excelent and powerfull bit for use on steel
Queen Schmidt (verified owner) –
I bought this to drill through a metal plate that I could not see inside a brick wall. It did not go through. I tried it on some scrape metal and it went through clean and fast so not sure why. The other issue was I bought a Milwaukee bit extender to reach through the wall and this bit would not in fit the 1/4 inch holder.
Winston Herman (verified owner) –
Stays sharp, nice bit…well worth the price
Lois Kirlin (verified owner) –
These are the best bits I have ever used. They last through many uses on heavy steel. (I recommend going slow, and putting a drop of oil on the tip every 30-60 seconds.) I used this bit to drill 10 holes thru 1/4” steel, then thru a bunch of rivets, and it is still sharp!
Magdalena Hegmann (verified owner) –
Really? You want me to review a drill bit? Umm, it put a hole in the material I wanted so I guess it was at least good.
Hosea Grimes (verified owner) –
Used to drill hole in planter.worked great
Emanuel Bauch (verified owner) –
The cobalt bit drills stainless steel well. The Milwaukee brand performs much better than the competition.