TS 5319

TS 5319 defines the principles for showing section surfaces and material by hatching in technical drawings. In drafting practice, hatching is one of the core graphic devices used to make a cut surface readable, indicate where a part has been sectioned, and present material information in a consistent visual form. This helps reduce ambiguity between views and supports manufacturing, inspection, and technical documentation.

Why section hatching matters in drawing practice

From a general technical perspective, section hatching is a graphical convention used to make hidden internal forms easier to understand. The direction, spacing, and arrangement of the hatch lines help define the boundaries of the cut area, distinguish adjacent parts, and carry material information directly on the drawing. In machine parts, assemblies, and detail drawings, this convention provides clarity that is as important as dimensions.

Where this standard applies

The standard covers the rules for section hatching used to identify material types in technical drawings across all occupational fields. Its focus is not on defining the product geometry itself, but on how material information is read through sectional representation. That makes it useful wherever a drawing needs a shared visual language for interpreting cut surfaces and the materials they represent.

• Representation of cut surfaces in drawings
• Use of hatching to distinguish material types
• A common and readable visual language for technical drawings
• General drafting principles applicable across disciplines