DIN 352 Hand Tap Set – 3-Piece (HSS)

The kit is used to make internal threads in holes, mainly in metals such as steel, aluminum or cast iron. It is used in workshop work, service work and unit production.

Each tap is responsible for a different work step: the stripper inserts the thread, the intermediate thread deepens it, and the finisher gives the final dimension. Unfolding the process reduces resistance and the risk of tool breakage.

Technically, this is possible, but not recommended. Skipping steps significantly increases the load on the tool and can lead to damage and inaccurate threading.

Threading should be done in stages (1 → 2 → 3), making a backward movement every few turns to break the chip. It is recommended to use a lubricant that reduces friction and makes work easier.

This is a short retraction of the tap during operation. It allows you to break the chip that is forming, prevents it from jamming and reduces the risk of the tool breaking.

The most common causes are the lack of chip breakage, too much material resistance, the wrong thread hole diameter or skipping work steps. Lack of lubrication also significantly increases the risk of damage.

This may be due to a lack of lubrication, too small a hole, or clogging the grooves with chips. In this case, stop working, clean the tool and continue with the lubricant.

HSS taps are designed for machining structural steel, aluminium, non-ferrous metals and cast iron. They work well in most standard workshop applications.

Yes, but it is recommended to use the right threading oil and work carefully in stages, as this material offers more resistance and increases the risk of seizure.

The 3-piece set breaks down the process into more steps, which increases control and operational safety. 2-piece kits are faster, but put more strain on the tool and require more experience.

This is the standard for manual taps designed for stepwise operation. The /3 designation stands for the full set: stripper, intermediate and finisher.

The diameter of the hole depends on the thread and its pitch. In practice, the principle is used: thread diameter minus pitch or selection tables are used. An incorrect hole can damage the tool.

Yes. Lubrication reduces friction, improves thread quality, and extends tool life. Dry running significantly increases the risk of damage.

No. These are tools designed for manual work. For machine work, taps with different geometry and design are used.