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.
Related products
Drill Bits
Bosch Carbide-Tipped Rotary SDS-Plus Hammer Bit Set (7-Piece)
Model# HCK001
Drill Bits
Model# 48-28-1010
Drill Bits
Bosch 20 in. Hammer Steel 1-1/8 in. Hex Moil Point Chisel for General Chipping Work
Model# HS2161
Drill Bits
Model# 282269
Drill Bits
Milwaukee 1/4 in. X 3-1/2 in. Pilot Drill Bit For Hole Saw Arbor
Model# 49-56-8010
Drill Bits
Model# DW2046 G
Drill Bits
Model# DW2542
Drill Bits
Model# FB-005
Richie Hoppe (verified owner) –
They are really hard steel to work on hard to bore metals. Good stuff
Elmira Cassin (verified owner) –
The cobalt bit drills stainless steel well. The Milwaukee brand performs much better than the competition.
Conrad Hudson (verified owner) –
This bit worked fine for my steel drilling.
Donny Brakus (verified owner) –
Used this to drill through a locked door in my home that didn’t have a key. I used a normal drill bit for 30 minutes to no avail on the anti-drill insert. This drill bit got through in less than a minute.
Laurel Padberg (verified owner) –
It successfully completed the task that i had purchased it for.
Kelly Mante (verified owner) –
Wow. Powered through the steel like wood. Great addition into my toolbox.
Josefina Kris (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.
Melany Bailey (verified owner) –
Have multiple cobalt bits for drilling stainless on boats, work great last until I break them.
Cathy Schuster (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.
Gilbert Jenkins (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.
Sabrina Mann (verified owner) –
Bought this to drill through a car frame rail and worked flawless. Drilled through the metal with little effort.
Hillary Paucek (verified owner) –
Its an odd size but needed it for my application. Cobalt bit should last for a long time
Rossie Kub (verified owner) –
Excellent drill bit for hard metal!
Baby Klein (verified owner) –
Drills are good quality and get the job done.
Raoul Berge (verified owner) –
It drilled perftly through the bolts I was trying to get off of my lawnmower. I would recommend trying it for yourself.
Jennyfer Torphy (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.
Eli King (verified owner) –
Best drill bit I have ever bought!
Clare Quigley (verified owner) –
Drilled 6 spot welds successfully while other drill bits broke or dulled quite quickly.
Odie Hahn (verified owner) –
This drill bit worked great in my Hitachi drill.
Marianna Haley (verified owner) –
Rugged, sharp, excellent quality