Snap-on Closures



Snap-fit assemblies are an economical means of achieving both temporary and permanent attachment in thermoplastic components. Issues with snap-fit systems usually revolve around managing assembly and removal forces across the range of manufacturing tolerances. Yielding and/or cracking are the failure modes that most often occur.

Stress Engineering has over 25 years of experience designing snap-fit assemblies. We employ a combination of detailed analytical calculations and finite-element analysis to predict performance of snap-fit closures.

  • Predict assembly/removal forces and tolerance ranges
  • Assess yielding/cracking during assembly/removal
  • Model relaxation of components under sustained loads due to interference