TS 5717

TS 5717 is a terminology standard for taps and thread cutting, focused on the designation of the main types and the related technical vocabulary. It defines how tap types are identified, how the tool set is described, and how the basic ideas linked to size characteristics and thread profiles are expressed, so manufacturers and users can work with the same terminology.

Why the terminology matters

In general technical practice, taps are cutting tools used to generate internal threads in an existing hole. They may differ in body form, lead design and intended use, so clear naming is important for ordering, design documentation and production communication. Thread profile is another key concept: it describes the shape of the thread and helps distinguish one thread form from another in terms of fit, assembly behavior and application.

What this standard covers

• Designation of the main types
• Naming of the tool elements
• Size characteristics
• Thread profiles

The document follows the terminology framework of ISO 5967 and notes that the drawings are only illustrative, since tap design may vary by manufacturer. In other words, TS 5717 standardizes the language around taps and thread cutting rather than prescribing a single tap design or manufacturing method. This edition is withdrawn, but it remains useful as a historical technical reference for terminology comparison and archive work.