Short Machine Tap DIN 352 Form C 35° Spiral Flute HSSE - M 8 x 1.25

• Create metric ISO internal threads in steel and comparable alloys, depending on the workpiece condition and cutting fluid.
• Use when you need chip transport toward the entry, as typical for spiral flute taps.
• Often selected for hole types where chips should not be pushed forward to the bottom.
• Applied in production and maintenance work where thread quality and chip control matter.
• 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 Ensure the hole has enough depth for the planned thread, use lubrication, and remove chips from the flute before you continue.

• Spiral flute supports controlled chip evacuation
• Short pattern supports efficient tool handling
• HSSE material supports dependable edge behavior
• Form designation supports a defined lead geometry
• Suitable for routine internal threading tasks

• 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 spiral flute in the selected size

• Tool type: Short machine tap
• Standard: DIN 352
• Chamfer: Form C
• Flute type: 35 degree spiral flute
• Material: HSSE
• Nominal size: M 8 x 1.25
• Thread type: Metric ISO thread, depending on execution
• Tolerance class: Depending on execution
• Coating: Depending on execution

What is the benefit of a spiral flute tap in internal threading?

A spiral flute tap typically transports chips back toward the entry, which can support a cleaner cut when chips should not be pushed forward. Always keep chip evacuation under control and avoid forcing the tool.

When do you choose Form C instead of Form B?

Form C spiral flute execution is commonly chosen when chip transport to the entry is desired. Form B is often used when chips can move forward, depending on hole design and process setup.

Can you use the tool in the size M 8 x 1.25 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.

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.

Can you use the tool for re tapping an existing thread?

Yes, depending on thread condition you can use it to clean up damaged flanks. Keep torque low and stop if the tool binds, because the cutting edges are not made for removing large amounts of material.

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.