Countersink-Bits, HSS-G, 10,4

• Chamfer, deburr, or countersink drilled holes before tapping, assembly, or screw seating work.
• Use the countersink bit to create a clean entry edge that supports tool guidance and reduces burr interference.
• Control pressure and feed so the countersink remains concentric with the drilled 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 Verify the workpiece preparation, thread designation, and holder alignment before starting. Stop if torque rises suddenly or if the tool no longer follows the hole axis.

• A defined countersink size supports clean edge preparation before assembly or tapping.
• The HSS-G execution is stated in the product name and supports clear differentiation.
• Chamfering reduces burr interference at the hole entry.
• The bit format is practical for service and installation work.

• Excessive pressure can enlarge the chamfer more than intended.
• The tool prepares the hole entry but does not replace the required drill or tap.

1. Confirm the countersink size and the hole that must be prepared.
2. Secure the countersink bit in a suitable holder.
3. Align the bit to the drilled hole before applying pressure.
4. Start the countersink with controlled speed and light feed.
5. Stop when the entry edge is chamfered to the required form.
6. Remove chips and inspect the edge for burrs.
7. Continue with the following tapping or assembly operation only after the entry is clean.

• 1 piece Countersink-Bits, HSS-G, 10,4

• Product type: Countersink bit
• Tool material: HSS-G

How do you select the correct variant

Select the thread designation stated in the product name only when it matches the drawing, mating component, and required process. Also check the tool type, material designation, and holder or machine setup before use.

What does the thread designation tell you

The thread designation identifies the thread system and size reference that must match the drawing or mating component.

Why is countersinking useful before tapping

A clean entry chamfer helps guide the following tool and removes burrs that can interfere with thread start or assembly.

How do you avoid an oversized chamfer

Use controlled pressure and stop as soon as the required entry edge is reached. Check the chamfer before the next operation.

What does HSS-G tell you

HSS-G is the tool material or execution stated in the product data. Use it as a selection fact together with thread designation and tool geometry.

Where can you find more product and application information in a catalog

VD 23 catalog as PDF