Short Machine Tap with interrupted threads DIN 352 Form B HSSE - M 4 x 0.7

• Create metric ISO internal threads in steel and comparable alloys, depending on the workpiece condition and cutting fluid.
• Use when an interrupted thread execution is specified for the process or the material behavior.
• Suitable when you want a special cutting profile stated in the product name for differentiation.
• Applied in repair and production environments where controlled threading is required.
• 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 Keep alignment stable and use appropriate cutting fluid. If torque rises, stop and clear chips to avoid tool damage.

• Special execution for interrupted thread geometry as named in title
• Short pattern supports efficient handling in many holders
• HSSE material supports consistent edge strength
• Supports repeatable thread production when preparation is correct
• DIN 352 reference supports standardized selection

• Not suitable for very hard or highly abrasive materials, depending on execution
• Not intended for high performance tapping without rigid guidance and controlled coolant

1. Check the drawing and confirm thread specification.
2. Prepare the predrilled hole and remove entry burrs.
3. Fix the component so the hole axis stays stable.
4. Mount the tap in a stable holder and keep alignment square.
5. Use a suitable cutting fluid for the material.
6. Start tapping with steady feed and consistent rotation.
7. Pause if chips build up and clean the cutting area.
8. Back the tool out and inspect the thread flanks.

• 1 piece short machine tap with interrupted threads in the selected size

• Tool type: Short machine tap
• Standard: DIN 352
• Chamfer: Form B
• Interrupted threads: Yes
• Material: HSSE
• Nominal size: M 4 x 0.7
• Thread type: Metric ISO thread, depending on execution
• Tolerance class: Depending on execution
• Coating: Depending on execution

What does interrupted threads mean on a tap?

It indicates a special execution where the cutting profile is not continuous along the full circumference. Effects depend on design, but the key point is that you use the execution specified by the process.

How do you decide between the standard short machine tap and the interrupted thread execution?

Use the interrupted thread execution when it is specified for the job or when you have process evidence that it improves stability in your material. Otherwise use the standard execution that matches your shop practice.

Can you use the tool in the size M 4 x 0.7 by hand and in a machine?

Yes, depending on your holder and setup you can drive the tool by hand or with a machine. Focus on alignment, lubrication, and controlled torque to protect the cutting edges.

Can you run this tap in a machine and in a hand setup?

Yes, depending on your holder and setup you can drive the tool by hand or with a machine. Focus on alignment, lubrication, and controlled torque to protect the cutting edges.

What lubrication should you use for thread cutting?

Use a cutting fluid suitable for the workpiece material and the tapping method. Stable lubrication supports surface quality and helps control torque.

Where can you find technical background on short machine taps and selection criteria?

Use this document for selection guidance and general process parameters: Technical information short machine taps as PDF.

How do you choose the correct pre drilled hole for tapping?

Use a drill size recommendation that matches the thread and tolerance requirement. Use a chart from your process documentation or the manufacturer, and avoid guesswork.

Where can you find the VÖLKEL threading tools catalog for additional sizes and executions?

For the full overview use: VD 23 catalog as PDF.