TS EN ISO 5845-1 (Eski no: TS ISO 5845-1)

TS EN ISO 5845-1 (Eski no: TS ISO 5845-1): TS EN ISO 5845-1 sets out the general principles for showing fastener assemblies in a simplified way on technical drawings. It addresses the drawing representation of holes, bolts/screws, rivets and similar elements, with the aim of keeping assembly information clear while avoiding unnecessary graphic detail.

What simplified representation means in drawing practice

In technical documentation, fasteners are often not drawn with every geometric detail. Instead, standardized simplified representations are used to preserve legibility, reduce drawing clutter and speed up drafting. In general engineering practice, this kind of convention is especially valuable in assembly drawings where repeated holes and fastener patterns would otherwise dominate the view. These conventions work alongside other drawing rules for dimensions, views and notation.

The core subject covered by this standard

The scope of this part is the general principle for simplified representation of holes and fastening elements on technical drawings. It focuses on how the graphic presentation should be organised so that the assembly remains understandable without showing unnecessary detail. As part 1 of the series, it provides the foundational framework for the topic and supports more specific handling within the same family of standards.

• Simplified representation is used to manage information density in drawings.
• Holes and fasteners are treated together in the assembly context.
• The purpose is to keep the intended manufacturing and assembly information intelligible.
• The standard provides general principles for consistent technical drawing practice.