standard TwinBox Machine Tap + Twist Drill, DIN 371, HSS-E, M 3 x 0.5

• Use the set when you want a matched drill and tap pairing for a defined thread designation.
• 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 drilling and tapping setup that keeps both tools square to the surface.
• 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 and ring execution in the product name before use. VÖLKEL uses and recommends spiral drills from LÖHER. LÖHER product catalog as PDF

• Efficient chip transport supported by flute design when correct cutting fluid is used.
• Simple inspection using a suitable screw or gauge after cleaning the thread.
• Suitable for repeatable workflows in maintenance and serial production setups.
• Consistent internal thread geometry when the tool is guided square to the surface.
• Clear assignment to ISO metric threads through the designation in the product name.

• 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. Identify the correct thread designation on the box and confirm it matches the drawing.
2. Secure the workpiece and mark the drilling location so the tool starts on center.
3. Drill the hole with the matched twist drill using suitable cutting fluid.
4. Deburr the entry so the tap lead can start without edge damage.
5. Clamp the tap in a stable holder and align it square to the surface.
6. Start tapping with steady feed and maintain lubrication through the cut.
7. Reverse out to clear chips when resistance increases and keep the hole clean.
8. Clean the thread and verify fit with the intended fastener or a gauge.

The provided product data does not include an itemized scope of supply for standard TwinBox Machine Tap + Twist Drill, DIN 371, HSS-E, M 3 x 0.5. The product name indicates a combined tap and twist drill execution, but individual quantities are not listed.

• Product type: machine tap
• Thread designation: M 3 x 0.5
• Thread system: ISO metric
• Standard: DIN 371
• Tool material: HSS-E, HSS
• 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.

Where can you find an overview of the TwinBox concept

Use this PDF for orientation and the ring system overview. TwinBox overview as PDF

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.

Which TwinBox execution is referenced by the ring term in the product name

Use this PDF for the execution specific differentiation and handling notes. Standard TwinBox 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 tools do you need in addition to the kit

You typically need a suitable holder for the tap and a stable drilling setup. Use clamping that keeps the tool axis square to the surface and prevents wobble.

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