3D & CADverifiedReviewed 2026-08-08

STEP

ISO 10303 STEP · application/step · .step .stp

Overview

STEP is the ISO 10303 family for product data exchange. It preserves precise geometry, assemblies, and manufacturing information better than mesh formats, which makes it essential for engineering handoffs and long-term CAD records.

Typical use cases

  • CAD exchange
  • Engineering
  • Manufacturing data
  • Product lifecycle records

Advantages

  • Designed for cad exchange
  • None storage
  • Open standard specification
  • Browser support: CAD applications only

Disadvantages

  • Large text files
  • Viewer support varies
  • Not optimized for real-time rendering

How to open or use it

Open STEP files with an application that supports application/step. Editable in CAD systems. For delivery, use a viewer or converter that reads step, stp.