TwinBox HexDrive Machine Tap + Twist Drill, DIN 371, Type B, HSS-E, M4 x 0.7

• Producing internal threads in workshop, maintenance and production environments
• Selecting the tap by thread system, hole condition and workpiece material before starting the operation
• Using a matching holder or machine drive so the tap enters square and remains aligned in the hole
• Process: manual driving or assisted driving depending on your holder and machine setup
• Use: thread cutting, re tapping, and thread cleaning depending on condition

Note VÖLKEL uses and recommends spiral drills from LÖHER. LÖHER product catalog as PDF

• Thread related geometry and designation are clearly assigned in the product name for practical selection
• Suitable for workshop, maintenance and machine room workflows with repeatable tool use
• The explicit standard and material markings support controlled tool assignment in professional use
• A dedicated threading tool reduces compromise compared with improvised general purpose tooling

• Tool selection still depends on matching the thread system, material and process type to the actual job.
• It is intended for defined threading work and not for undirected high speed use without the correct setup and lubrication strategy.

1. Prepare the workpiece and the hole so the tool can enter cleanly and on axis.
2. Clamp the tap in a suitable holder or machine drive with secure torque transmission.
3. Bring the tap to the hole entry and start the thread with controlled alignment.
4. Advance the tool with stable lubrication and feed that matches your process setup.
5. Reverse and remove the tap carefully once the required thread depth is reached.
6. Clean the hole and inspect the produced thread before final assembly.

• 1x Machine Tap HexDrive DIN 371 Form B HSSE - M 4 x 0.7
• 1x Twist Drill HexDrive HSSE 3.3 mm

• Product type: TwinBox drilling and tapping set
• Thread system: Metric ISO
• Standard: DIN 371
• Form: Type B, Form B, Type M
• Tool material or finish: HSS-E, HSSE
• Drive or handling concept: HexDrive

What do you use TwinBox HexDrive Machine Tap + Twist Drill, DIN 371, Type B, HSS-E, M4 x 0.7 for?

You use this product for a defined threading step such as internal thread cutting, external thread cutting, hole preparation or controlled tool handling depending on the product type.

Where can you see the TwinBox concept?

For orientation on the TwinBox product group, see TwinBox overview as PDF.

How do you choose between machine tapping variants?

You check the thread system, the hole condition, the workpiece material and the drive concept so that geometry and process fit the actual task.

Where can you find the full threading tools catalog?

For catalog level orientation, see VD 23 catalog as PDF.

What does the Metric ISO designation mean?

M denotes the ISO metric thread system used widely in mechanical engineering, maintenance and general fastener work where metric screw threads are standard.

What should you check after the operation?

Check the thread entry, running behavior and general fit with the mating part or the next process step before releasing the workpiece.

How do you protect tool life in daily use?

Use stable alignment, suitable lubrication and a holder concept that matches the torque and guidance demands of the product.