Fastening Expertise

Echo Engineering and Ammex Plastics have been investing heavily with the automotive fastening market by developing a library of different designs, hiring plastics and process engineers, adding additional presses, and purchasing new testing and measuring devices.

We are experienced in designing and manufacturing a variety of different automotive clips used on HVAC lines, brake lines, harnesses, etc.

With Echo and Ammex, you’ll be working with a team experienced in bringing new clips to life based on performance requirements set by the tier-1 or OEM manufacturer.  This is why we’ve brought a lot of testing in-house at our headquarters in Indianapolis in order to speed up our process and devlop a more comprehensive understanding of automotive fastening technologies.


Software and Testing Capabilities

Echo utilizes customer system requirements to begin ideation then design, develop, simulate, test, and manufacture fasteners that meet or exceed difficult OE criteria for:

  • Insertion & extraction forces
  • Clamping and opening forces
  • Living hinges for closure needs
  • Over-molded rubber onto plastic for enhanced NVH performance
  • Leak testing
  • FEA
  • FMEA
  • Detailed test plans and test reporting