• Key Visual

Step Probes

Key Features

  • Precisely controlled probe travel
  • Step tip geometry
  • Replaceable and non-replaceable versions
  • Plating options available
step probes

Step Probe Product Line

STP-1 probe
STP-25 probe
High frequency probe
  • OEM interconnect solutions
  • Customized to specification

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A “step” or “hat” probe indicates the concept of using a “step” to control the distance of probe tip entry into a wire harness connector housing, thus allowing electrical contact to be made to a terminal without actually entering the terminal. The critical areas of the connector terminal remain virgin to ensure proper conductivity and inter-metallic relationships once the harness is assembled into its end-use.

Depending on customer preference, step probes can be either replaceable or non-replaceable. All replaceable step probes feature a Pylon bend, to prevent walk out of the probes from the receptacle. Non-replaceable probes have a press ring, which holds the probe in place and keeps it from walking out of the mounting bracket.

Though used almost exclusively in the wire harness testing industry they can also be used in ICT / FCT testing. ECT offers a variety of pitches and step depths to accommodate most harness test requirements.


  • Wire harness connector
  • Position and detection of inserted contacts

Controlled probe travel distance to prevent contact-induced component damage

  • Reliable contact
  • Best cost of test
  • Long life