Milwaukee 5/16 in. Thunderbolt Cobalt Twist Drill Bit
$10.68
Perform nailing and drilling works effortlessly with the selection of this reliable Milwaukee Thunderbolt Cobalt Drill Bit. Ensures extreme durability.
In stock
Description
The MILWAUKEE RED HELIX Cobalt 5/16 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 | 0.08 lbs |
|---|---|
| Dimensions | 1.88 × 0.38 × 6.75 in |
| Assembled Depth (in.) | 5/16 in |
| Assembled Height (in.) | 5/16 in |
| Assembled Width (in.) | 4.63 in |
| Bit Diameter | 5/16 in |
| Bit Length (in.) | 4.5 |
| 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 | 48-89-2317 |
| Self-Feeding | No |
| Shank Diameter | 3/8 in |
| Shank Style | 3-Flat |
| Tools Product Type | Power Tool |
Reviews (60)
60 reviews for Milwaukee 5/16 in. Thunderbolt Cobalt Twist Drill Bit
Only logged in customers who have purchased this product may leave a review.
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Vella Zieme (verified owner) –
This cuts through stainless steel
Rasheed Lind (verified owner) –
Stays sharp, nice bit…well worth the price
Cassie Bahringer (verified owner) –
Used to drill hole in planter.worked great
Corbin Pacocha (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.
Bette Cormier (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
Muriel Sipes (verified owner) –
It worked exactly the way I wanted
Francesca Kreiger (verified owner) –
The best type of drill bit I use to work on stainless steel, the only bad point about them is that they are very fragile and break at the first mistake made during a manual drilling operation, but using correctly , they are the best!
Jayce Murray (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.
Katharina Cruickshank (verified owner) –
Used it to drill holes through 4 corners of metal rail section. Worked well. No problems.
Daisy Hammes (verified owner) –
Performed as specified by manufacturer.
Flo Jast (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.
Joan Walker (verified owner) –
Very good quality drill bit. I was able to drill through a quarter inch thick metal plate with relative ease.
Richmond Kozey (verified owner) –
Throw this in a drill press and it cuts through steel like it’s aluminium. Does well with a cordless drill as well. Doesn’t wander much. So far has lasted way longer than a normal junk carbide or titanium coated bit. For metal drilling I’m going cobalt from now on, the price is worth it.
Lester Stark (verified owner) –
Worked well drilling on cast iron and metal.
Candido Ebert (verified owner) –
These cobalt drill bits last longer than standard black oxide or those gimmicky titanium coated ones do.
Ernie Casper (verified owner) –
Bought it to drill stainless steel shelves. Used the lower speed on my Ryobi battery drill as recommended on the drill package and was amazed at how well it worked.
Katherine Glover (verified owner) –
I have been drain drilling holes into galvanized steel planters and it has been doing fine. Very pleased. I bought two just in case but now I know I won’t need the other one.
Madilyn Barton (verified owner) –
I am new to knife making. I have tried several different drills and this was the best of the lot for drilling hard metal. Drill speed is vital to successTool speed charts are available onlineI use 600 rpm on my drill press with a little motor oil
Maximus Langosh (verified owner) –
Drilled right though stainless like nothing
Tia Prohaska (verified owner) –
Item in great shape out of the container. Very sharp, definitely straight, and superb craftsmanship. Cut right through steel, wood and almost anything else you might desire. Excellent drill bit.