GREEN RING TwinBox Machine Tap + Twist Drill, DIN 371, HSS-E, M3 x 0.5

Highlights of this tool set:

• Perfectly matched: The included twist drill with a 2.5 mm diameter is the ideal core hole size for the M3 thread, guaranteeing a clean and precise result.
• For general applications: The GREEN RING tap is specially developed for use in materials with good machinability up to 1000 N/mm².
• Optimized for through holes: The geometry of the tap is ideal for transporting chips forward out of the hole, which minimizes blockages and damage.

Standards and Tolerances:

• DIN 371: This standard defines the dimensions for machine taps with a reinforced shank for smaller thread diameters.
• DIN 13: The set is designed for the metric ISO thread according to DIN 13. The designation "M 3 x 0.5" confirms the nominal size and pitch of the thread.

Content:

• 1 x GREEN RING Machine Tap, DIN 371, HSS-E, M3 x 0.5 VÖLKEL 35326
• 1 x Twist Drill 2.5 mm

Download: GREEN RING Datasheet PDF

Watch the TwinBox in action to see how it can simplify your work:

• The video about the **VÖLKEL TwinBox** explains how the product solves the problem of finding the right twist drill for the tap and how you can access detailed information by scanning the QR code on the packaging: VÖLKEL GREEN RING TwinBox Video.
• This video demonstrates the precision and efficiency of a VÖLKEL machine tap in use on a CNC machine. It shows how the tool provides an engine cylinder head with a precise thread: VÖLKEL Machine Tap Video.

1. What is the difference between GREEN RING and BLUE RING?
The GREEN RING is designed for general use in materials with good machinability, while the BLUE RING is suitable for demanding and high-alloy steels. The BLUE RING has a higher cobalt content for better heat resistance.

2. Why is a twist drill included in the set?
The biggest advantage is the perfect match to the tap. An incorrect core hole size can lead to a messy or damaged thread. The TwinBox eliminates this risk.

3. Is this set also suitable for blind holes?
No, this special GREEN RING set is optimized for through holes, where chips can exit at the front. For blind holes, there are special taps that transport the chips upwards.

4. What are materials with good machinability?
These are materials that form easily broken chips during machining (such as drilling and threading). This includes unalloyed and low-alloy steels, malleable cast iron, and zinc alloys. Such materials are ideal for this tool.