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Thread Representations

In one sentence: Draws ISO 6410 / ASME Y14.6 simplified thread representations (solid crest, dashed root lines) on threaded holes and bolts.

Overview

Workbench: TechDraw
Menu: TechDraw → Centerlines/Threading

Four tools are available, one for each combination of hole/bolt × side/bottom:

Tool Menu name What it draws
Thread Hole (Side) Draw Thread Hole (Side View) Inner thread: solid minor diameter, dashed major diameter
Thread Hole (Bottom) Draw Thread Hole (Bottom View) Inner thread: full minor circle, ¾ major circle
Thread Bolt (Side) Draw Thread Bolt (Side View) External thread: solid major diameter, dashed minor diameter
Thread Bolt (Bottom) Draw Thread Bolt (Bottom View) External thread: full major circle, ¾ minor circle

Step-by-step (all thread tools)

  1. Click the circular edge of the hole or bolt in the view.
  2. Choose the appropriate thread representation tool.
  3. The cosmetic lines appear in the correct ISO style.
  4. Use Insert Diameter Dimension to dimension the thread nominal diameter, then manually set FormatSpec to add the thread designation (e.g. "M12 × 1.75").

Common mistakes and pitfalls

Thread tools draw cosmetic lines — not geometry

The thread representation tools draw ISO-conventional cosmetic lines. They do not create thread geometry in the 3-D model and do not affect hole or shaft dimensions. You still need the correct nominal dimension and thread designation text.

See also