3/8" Thunderbolt Black Oxide Drill Bit

Features

  • Durable design with a thicker web for increased strength
  • 135° split point tip for precision starting and reduced walking
  • 3-Flat Secure-Grip™ shank to minimize slipping
  • Corrosion-resistant black oxide coating

Specifications

Assembled Weight 0.12 lbs
Bit Diameter 0.375"
Bit Material Black Oxide
Bit Type Twist
Cut Direction Right Hand / Clockwise
Drill Bit Length Type Jobber
Drill Bit Type Twist Drill Bits
Drill Diameter 0.375"
Drill Point Angle 135°
Drill Point Design Split
Drilling Depth 4.0"
Flute Length 4.0"
Grade Heavy Duty
Minimum Chuck Size Required 1/4"
Package Weight 0.12 LBS
Shank Diameter 0.25

Jobber length drill bits designed for durability and long life. The thicker core provides strength and helps prevent breakage. The specially designed flute form clears chips effectively. The 135° split point tip starts accurately to reduce walking, making it suitable for drilling on curved surfaces and for use with portable drills.

Model Number: 48-89-2730

Milwaukee 3/8" Thunderbolt Black Oxide Drill Bit Review

4.7 out of 5

Milwaukee has long been a name I trust when it comes to power tools and accessories, and their 3/8" Thunderbolt Black Oxide Drill Bit is no exception. My experience with this drill bit has been overwhelmingly positive, thanks to a combination of thoughtful design, durable materials, and practical features that make it a go-to for a range of applications.

First off, the build quality of this drill bit immediately stands out. Milwaukee has utilized a thicker core design, which significantly enhances the bit’s strength and reduces the likelihood of breakage. This is a crucial aspect, especially for those of us who frequently use portable drills and often work on curved or uneven surfaces. The black oxide coating not only gives the bit a sleek, professional look but also provides corrosion resistance, ensuring longevity even in less-than-ideal conditions.

One of the standout features of this bit is the 135° split point tip. This particular design is a game-changer when it comes to precision drilling. Whether you're working on wood, plastic, or even softer metals, the split point tip ensures that the bit starts exactly where you want it to, minimizing "walking" and making pilot holes almost unnecessary. This precision is particularly beneficial when working on delicate projects where accuracy is paramount.

The flute design also deserves special mention. Milwaukee has engineered these flutes to effectively clear chips, which not only speeds up the drilling process but also reduces the heat build-up that can lead to premature wear. The curved flutes are especially effective at evacuating material quickly, which is a boon when you’re working on larger projects and need to maintain a steady pace.

In terms of performance, I've found the Thunderbolt drill bit to be highly versatile. While it's not designed to tackle hardened metals, it excels in more common materials like wood, plastic, and mild steel. I've used it for a variety of tasks, from woodworking projects to installing fixtures, and it has consistently delivered clean, precise holes with minimal effort. The bit's durability means that it stays sharp longer, reducing the need for frequent replacements and ensuring that you can rely on it for multiple projects.

The shank design is another thoughtful feature. The 3-Flat Secure-Grip™ shank is tailored to minimize slipping in the drill chuck, which is a common issue with standard round shanks. This design ensures a more secure fit, reducing the risk of the bit slipping mid-drill and potentially damaging your workpiece or the bit itself.

One minor gripe I have is with the storage case. While the case itself is robust and well-designed, holding the bits securely and protecting them from damage, the fit is a bit too tight. It requires a fair amount of effort to extract the bits, which can be frustrating when you're in the middle of a project. However, this is a small trade-off for the added security of knowing your bits are well-protected.

I’ve also found that, like many other drill bits, the smaller sizes are more prone to bending or breaking if not handled carefully. This isn’t a flaw unique to Milwaukee, but it’s something to keep in mind. Using the appropriate pressure and ensuring the drill is properly aligned can mitigate this risk.

In terms of value, the Thunderbolt drill bit offers a lot of bang for your buck. It’s reasonably priced, especially considering its durability and versatility. It’s a reliable addition to any DIYer or professional’s toolkit, capable of handling a wide range of tasks without frequent replacements.

Overall, I highly recommend the Milwaukee 3/8" Thunderbolt Black Oxide Drill Bit. Its durable design, precision engineering, and effective performance make it a standout choice for anyone in need of a reliable, high-quality drill bit. Whether you’re working on wood, plastic, or mild steel, this bit is up to the task, delivering consistent results and standing up to the rigors of regular use. The minor inconvenience of the tight-fitting case is easily overshadowed by the bit’s many advantages, making it a worthwhile investment for any serious tool user.


Project Ideas

Business

Custom Furniture Manufacturing

Utilize the drill bit for precision drilling in the production of custom furniture pieces. Its durability and accuracy can help in creating high-quality furniture that meets specific client requirements.


Home Renovation Services

Offer specialized home renovation services that require precise and durable drilling, such as installing cabinetry, shelving, and other fixtures. The Thunderbolt drill bit ensures professional results, enhancing customer satisfaction.


Woodworking Workshops

Conduct woodworking workshops and classes, teaching participants how to use the drill bit effectively for various projects. This can be a great way to monetize your skills and promote your craftsmanship.


Custom Wood Sign Business

Start a business creating custom wooden signs for homes, businesses, and events. The precision of the drill bit allows for high-quality, personalized products that can be sold online or at local markets.


Tool Rental Service

Offer a tool rental service for DIY enthusiasts and small contractors. Provide high-quality tools, including the 3/8" Thunderbolt Black Oxide Drill Bit, ensuring customers have access to the right equipment for their projects.

Creative

Custom Wooden Jewelry Boxes

Use the 3/8" Thunderbolt Black Oxide Drill Bit to create intricate designs and precise holes for hinges in custom wooden jewelry boxes. The durable bit ensures clean cuts and longevity, perfect for detailed woodworking projects.


DIY Birdhouses

Craft unique birdhouses by drilling accurately placed holes for entryways and ventilation. The 135° split point tip allows for precision on curved surfaces, making it easy to create charming and functional birdhouses.


Handmade Wooden Lamps

Design and build wooden lamps by drilling holes for wiring and fixtures. The black oxide coating provides corrosion resistance, ensuring clean and smooth drilling through various types of wood.


Personalized Wooden Signs

Create customized wooden signs by drilling holes for hanging or mounting. The thick core and specially designed flute form help in achieving precise and clean cuts, perfect for detailed sign-making.


Decorative Wooden Wall Art

Craft intricate wall art by drilling detailed patterns and designs into wooden panels. The 3/8" Thunderbolt Black Oxide Drill Bit's precision and durability make it ideal for creating stunning decorative pieces.