Milwaukee 7/16 in. Thunderbolt Cobalt Twist Drill Bit
$19.98
This affordable Milwaukee Thunderbolt Cobalt Drill Bit is perfect for drilling on curved surfaces. Convenient to handle, maintain and offers durability.
In stock
Description
The MILWAUKEE RED HELIX Cobalt 7/16 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 | 0.16 lbs |
|---|---|
| Dimensions | 6.75 × 0.50 × 1.88 in |
| Assembled Depth (in.) | 7/16 in |
| Assembled Height (in.) | 7/16 in |
| Assembled Width (in.) | 5.12 in |
| Bit Diameter | 7/16 in |
| Bit Length (in.) | 5.5 |
| 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 | 48-89-2325 |
| Self-Feeding | No |
| Shank Diameter | 3/8 in |
| Shank Style | 3-Flat |
| Tools Product Type | Power Tool |
Reviews (60)
60 reviews for Milwaukee 7/16 in. Thunderbolt Cobalt Twist Drill Bit
Only logged in customers who have purchased this product may leave a review.
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Francisca Weber (verified owner) –
Drilled right though stainless like nothing
Nettie Walter (verified owner) –
Working on a deck project that requires me to drill into aluminum posts. This drill bit appeared to be the best that Home Depot had to offer for a metal project.
Ezra Borer (verified owner) –
I break bits pretty often when hand drilling and these bits are cheap enough that I am not upset when I do and sharp enough that I break them less often. Great for mild steel.
Carmella Erdman (verified owner) –
Very good quality drill bit. I was able to drill through a quarter inch thick metal plate with relative ease.
Erika Hamill (verified owner) –
Bought this to drill through a car frame rail and worked flawless. Drilled through the metal with little effort.
Florencio Ullrich (verified owner) –
Great bit. Very sharp. Went thru the wood like butter. Had some issues with the metal plate behind it, but it eventually penetrated it also.
Xander Hammes (verified owner) –
It successfully completed the task that i had purchased it for.
Josue Champlin (verified owner) –
They are the only bits I buy. They don’t clog up and stay sharp
Roxanne Kautzer (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.
Paul Bauch (verified owner) –
The cobalt bit drills stainless steel well. The Milwaukee brand performs much better than the competition.
Chloe Kuhic (verified owner) –
Stays sharp, nice bit…well worth the price
Luigi Schmitt (verified owner) –
Its an odd size but needed it for my application. Cobalt bit should last for a long time
Jess Hartmann (verified owner) –
This drill bit worked great in my Hitachi drill.
Geovanny Jacobi (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!
Stevie Bauch (verified owner) –
excelent and powerfull bit for use on steel
Lilian Bashirian (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.
Ronaldo Langworth (verified owner) –
Have multiple cobalt bits for drilling stainless on boats, work great last until I break them.
Octavia Ledner (verified owner) –
Wow. Powered through the steel like wood. Great addition into my toolbox.
Braulio Cole (verified owner) –
Quickly and repeatedly went through the 1/8″ angle iron
Sarah Bruen (verified owner) –
this drill bit did exactly what I needed it for. I especially liked the guiding nipple at the tip. I have had it for a month now and needed it to drill a large hole into a barbecue in order to insert a thermometer.