What are typical Design for Assembly requirements?

Learning Centre > What are typical Design for Assembly requirements?

There are no set rules in the DfA practice, however, there are some criteria you can use when trying to decide whether or not your design qualifies:

  • Parts need to be simple enough where they cannot be easily assembled by hand; i.e., screws need to be self-tapping (no pre-tapped holes), joints need to be over-designed, parts need at least one flat surface to provide a "key" etc.
  • Features must be designed so that they do not require any additional tooling which can increase manufacturing costs (e.g., holes requiring custom tools, screws needing custom taps)
  • Minimum tolerances need to reflect the tightest tolerances in your product design.
  • The assembly needs to be able to be completed without any errors


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