Hand Tap set of 3 pieces DIN 352 HSS-G non-serial form - M 39 x 4.0

• Cut internal threads in predrilled holes in mechanical engineering, maintenance, and metal fabrication.
• Use for ISO metric threads as designated in the product name.
• Use for blind holes or through holes based on lead form and flute geometry.
• Use a tap wrench that clamps the shank securely and supports straight entry.
• 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 Verify the exact designation, standard, and tolerance in the product name before you start.

• Clear assignment to ISO metric threads through the designation in the product name.
• Stepwise load distribution when you work with a set and follow the correct sequence.
• Practical for repair and fit adjustment work in service environments.
• Simple inspection using a suitable screw or gauge after cleaning the thread.
• Good control during manual tapping when you keep the tap aligned and lubricated.

• Not suitable for hard to machine materials without defined cutting data and stable machine rigidity.
• Not intended for high output production where dedicated high performance tooling is required.

1. Secure the workpiece so the hole axis stays stable during manual force.
2. Select the correct tap from the set and confirm the thread designation on the tool.
3. Apply suitable cutting fluid to the tap and the hole entry.
4. Start the tap square to the surface and turn with controlled hand force.
5. Reverse periodically to clear chips and reduce load on the cutting edges.
6. Continue with the next tap in the sequence until the required depth is reached.
7. Back the tool out fully and clean the thread with a brush and fluid.
8. Verify the thread with the mating screw and rework only if required.

The provided product data does not include an itemized scope of supply for Hand Tap set of 3 pieces DIN 352 HSS-G non-serial form - M 39 x 4.0. If your process requires accessories such as holders or cutting fluid, select them separately based on your setup.

• Product type: hand tap set
• Thread designation: M 39 x 4.0
• Thread system: ISO metric
• Standard: DIN 352
• Tool material: HSS-G, HSS
• Surface finish: ground
• Tolerance class: ISO 2 (6H)

How do you select the correct variant for your drawing

Match the thread designation in the product name to the drawing and the mating fastener. Confirm thread series, pitch, and class of fit before you start, especially for inch based threads.

Is this tap suitable for blind holes or through holes

The suitability depends on flute geometry and lead form noted in the product name. Spiral flute execution is typically chosen for blind holes because chips are transported out of the hole.

Where can you find technical background information for this tap type

Use this PDF for technical notes, application limits, and terminology. Technical information hand taps as PDF

Which tolerance class do you typically achieve

The typical tolerance class for this execution is ISO 2 (6H) when the process is set up correctly and the hole preparation matches the thread system.

Do you need cutting fluid

Yes, use suitable cutting fluid for the material to reduce friction and control chip formation. Keep lubrication consistent from start to finish and clean the tool after use.

Which holder should you use

Use a holder that clamps the shank securely and supports straight entry. In manual work this is typically a tap wrench, and in machines a tapping chuck or a suitable collet holder.

Where can you find the VÖLKEL catalog for additional variants and technical context

Use the catalog for the full program and selection guidance. VD 23 catalog as PDF