BLUE RING TwinBox Machine Tap + Twist Drill, DIN 371, HSS-E, M 5 x 0.8

What makes this TwinBox special:

• Saves time and effort: The included 4.2 mm twist drill has the exact core diameter for an M5 thread, so you can start your work immediately.
• Extremely durable: The machine tap made of HSS-E is extremely heat- and wear-resistant thanks to its cobalt content. It retains its sharpness even when machining tough materials.
• Specialist for blind holes: The special geometry of the tap is optimized for machine cutting of threads in blind holes, as the chips are efficiently guided out the front.

The importance of standards DIN 371 & DIN 13:

• DIN 371: This German industrial standard ensures that the tap meets precisely defined dimensions and tolerances. This guarantees reliable performance and high quality of the cut thread.
• DIN 13: The "M" in the designation "M 5 x 0.8" refers to the metric ISO standard, which standardizes the exact thread profile and dimensions. This way, you know exactly what thread you are cutting.

With the VÖLKEL TwinBox, thread cutting is a breeze:

1. Preparation:
   • Select the included 4.2 mm twist drill and clamp it securely in your machine.
   • Ensure good lubrication with cutting oil, especially for hard materials.
2. Drilling the core hole:
   • Drill the hole with a steady feed to the desired depth.
3. Cutting the thread:
   • Insert the machine tap.
   • Start the machine at a low speed and let the tool cut the thread into the core hole on its own.
   • After cutting, carefully withdraw the tool and clean the thread.

Learn more about the advantages of the TwinBox in this video: VÖLKEL BLUE RING TwinBox

This video explains how the TwinBox solves the problem of finding the right drill bit for the tap, and how you can get detailed application information by scanning the QR code on the packaging.

1. Why is the TwinBox offered in different sizes?
Each metric thread has a specific core hole size. VÖLKEL offers the TwinBox in various common sizes (such as M3, M4, M5, etc.) to provide the exact matching tool combination for each thread.

2. Can I also use the tap for wood?
No, the tap and drill are specifically designed for processing metals and alloys such as steel, stainless steel, and cast iron. Other tools and methods are used for wood.

3. What does the "6H" symbol mean?
The "6H" is a standardized tolerance class for internal threads (holes). It guarantees that the cut thread has an exact fit for most screws and bolts that correspond to tolerance class 6g. This ensures a tight and secure connection.

4. What is the advantage of the included twist drill?
The biggest advantage is the perfect match to the tap. An incorrect core hole size can lead to a messy, too loose, or too tight thread and, in the worst case, damage the tap. The TwinBox eliminates this risk.

5. Is the TwinBox also suitable for stainless steel?
Yes, absolutely. The HSS-E (cobalt) steel from which the tap is made is excellently suited for processing stainless steels, as it is particularly wear-resistant and withstands the heat generated when processing these materials.