8-32 UNC Impact Drill and Tap Bit

Features

  • Features a countersink
  • Laser Etched Size for easy size identification
  • 1/4" Quick Change Hex Shank
  • Designed for use in Impact Drivers and Drill Drivers
  • For use in up to 1/4" metal

Specifications

Coating Uncoated (Bright Finish)
Useable Length 0.23 in
Cutting Depth 0.23 in
Hole Diameter 2 in
Flute Length 0.55 in
Type Twist
Length 0.3 in
Weight 0.029 lb
Height 1.87 in
Width 5.75 in
Material Composition Metal
Material Application Metal
Shank Size 1/4 in
Shank Hex

This Impact Drill Tap drills and taps simultaneously. It features 32 threads per inch and is suitable for use in up to 1/4" metal. The size is laser etched for easy identification. It is designed for use with impact drivers and drill drivers.

Model Number: 48-89-4870

Milwaukee 8-32 UNC Impact Drill and Tap Bit Review

3.7 out of 5

As a seasoned DIY enthusiast, I've always found the process of drilling and tapping to be somewhat tedious. The need to switch between bits often turns a simple task into a time-consuming endeavor. Enter the Milwaukee 8-32 UNC Impact Drill and Tap Bit, a tool that promises to streamline this process by combining drilling and tapping into a single step.

From the get-go, the design of this bit is impressive. Milwaukee has crafted a tool that not only saves time but aims to deliver precision and ease of use. The bit features a 1/4" Quick Change Hex Shank, making it compatible with both impact drivers and drill drivers. This versatility is a significant advantage, as it means you don't need to switch tools in the middle of your project.

One of the standout features of this bit is its laser-etched size marking. It’s a small detail, but it makes a big difference when you’re sorting through a collection of bits. The laser etching ensures that the size marking won’t wear off over time, which is a common issue with cheaper bits.

Using the Milwaukee bit on various materials was a mixed bag. On thin aluminum plates, it performed admirably. The bit drilled and tapped in one smooth motion, without the need for cutting oil. I was particularly impressed with how the tapping threads shed material through the drill flutes, keeping the workspace clean. The countersink feature also worked well, providing a neat finish that’s often hard to achieve with separate tools.

However, the performance was not as stellar on thicker or harder materials. While the bit managed to drill and tap through 1/4" thick aluminum, it struggled with mild steel. Despite pre-drilling 1/8" holes, the bit broke on more than one occasion. This was disappointing, especially given Milwaukee's reputation for durable and reliable tools. It’s worth noting that using a slower screwdriver speed helped to some extent, but it didn’t entirely solve the issue.

Durability, or rather the lack of it, seems to be a recurring theme with this bit. Several instances of the bit breaking or wearing down quickly were concerning. In my experience, the bit worked well initially but showed signs of wear after a few uses. This is an important consideration if you plan to use it frequently or on tougher materials.

On a more positive note, the bit's ability to combine drilling, tapping, and countersinking into one operation is a significant time-saver. For lighter tasks, such as working with softer metals or thin sheets, the bit is incredibly efficient. It eliminates the need to switch between different tools, streamlining the workflow and reducing the time spent on each task.

For those working in electrical applications or on projects involving aluminum, this bit can be a valuable addition to your toolkit. It’s particularly useful for repairing stripped threading or tapping new threads quickly and efficiently. The convenience of having a three-in-one tool cannot be overstated.

However, the bit falls short when it comes to more demanding tasks. If you’re planning to work with thicker steel or require a tool that can withstand heavy-duty use, you might want to consider other options. The durability issues make it less suitable for professional use or for projects that involve harder materials.

In conclusion, the Milwaukee 8-32 UNC Impact Drill and Tap Bit is a tool with great potential but some notable limitations. Its design and features make it a convenient choice for light to medium-duty tasks, particularly those involving softer metals. The laser-etched size marking, quick-change shank, and countersink feature are all commendable aspects of this tool.

For DIY enthusiasts and hobbyists, this bit can be a worthwhile investment, provided you’re aware of its limitations. It’s ideal for occasional use and for projects where speed and convenience are more critical than heavy-duty performance. However, for professionals or those working with tougher materials, the durability issues may outweigh the benefits.

Would I recommend the Milwaukee 8-32 UNC Impact Drill and Tap Bit? Yes, but with reservations. It excels in specific scenarios, particularly for lighter tasks and softer metals. If your work falls within these parameters, this bit can save you time and effort. However, if you need a tool that can handle more rigorous use, you might be better off exploring other options.


Project Ideas

Business

Custom Metal Fabrication

Offer custom metal fabrication services to local businesses and DIY enthusiasts. Use the drill and tap bit to create precise threaded holes for various applications.


Repair Services

Provide repair services for metal equipment and machinery. The drill and tap bit is perfect for rethreading stripped holes and making new threaded connections.


Prototyping Services

Set up a prototyping service for inventors and small businesses. Use the drill and tap bit to quickly create prototypes of metal parts with threaded holes.


Metal Craft Workshops

Host workshops teaching metalworking techniques. The drill and tap bit can be a core tool for educating participants on drilling and threading metal.


Online Sales of Custom Parts

Create an online store selling custom metal parts. Utilize the drill and tap bit to produce high-quality, threaded components for various applications.

Creative

Metal Wall Art

Create intricate metal wall art by drilling and tapping designs into metal sheets. Combine with other metalwork techniques to produce unique and personalized pieces.


Custom Hardware

Design and produce custom metal hardware such as knobs, hooks, and brackets. The precision of the drill and tap bit allows for high-quality threads and clean finishes.


Jewelry Making

Use the drill and tap bit to create custom metal jewelry pieces. Drill holes and tap threads for assembling components or attaching clasps.


Miniature Model Parts

Craft detailed parts for miniature models and dioramas. The ability to drill precise holes and tap threads in small metal pieces is ideal for creating scale models.


Educational Kits

Develop DIY educational kits that teach basic metalworking skills. Include the drill and tap bit with metal pieces and instructions for assembling simple projects.