TS EN ISO 6410-1

TS EN ISO 6410-1 addresses the general conventions for representing screw threads and threaded parts on technical drawings. Its focus is not on defining the physical thread geometry itself, but on establishing a clear, consistent way to show threaded features in drawing practice.

Why thread representation matters in drawings

Screw threads are fundamental to fastening, adjustment, power transmission, and sealing functions. In technical documentation, a standardized graphic representation helps designers, manufacturers, inspectors, and assemblers read the same information without ambiguity. This is especially important for external threads on shafts, internal threads in holes, and threaded fasteners, where the drawing usually relies on conventional symbols rather than a full-scale depiction of the actual profile.

What this part covers in practice

The scope explicitly states that the standard covers methods for representing screw threads and threaded parts on technical drawings. In general technical terms, such conventions work together with other drawing standards to keep views, sections, dimensions, and notations consistent. They help indicate the presence and nature of a threaded feature while leaving detailed thread data such as pitch, diameter, or tolerance class to the relevant written specification and related standards.

This document is therefore about drawing language rather than product design: it supports clearer communication of threaded features across engineering workflows, while staying aligned with broader technical drawing conventions.

• Defines conventional ways to show screw threads on technical drawings.
• Applies to threaded parts such as external and internal threads.
• Uses symbolic representation instead of a full graphical profile of the thread.
• Works alongside general drawing standards such as ISO 128 and ISO 129.