Positive Lock Connectors

TE Connectivity
Part Number Information
Part #: Price/Availability:
Pos Lock Buy Now
Pos Rec Buy Now
MK-2 Buy Now

Positive Lock receptacles are specifically designed to provide ease of assembly and secure retention to mating tabs. These unique features are attainable by the reduced insertion force of the product and the locking dimple. The receptacle locks onto mating tabs containing holes and is removable only by deflecting an integrally designed depressor prior to withdrawal. The depressor can be deflected manually by thumb pressure, or automatically by a cam inside a specially designed nylon housing. If the housing is employed, removal of the terminal from the tab is performed by simply applying withdrawal force to the housing. In addition to providing a means of disconnecting the terminal, the housing performs its traditional insulating function.

Aside from reduced insertion forces, Positive Lock receptacles give the assembler a definite mechanical “snap” when the terminal is correctly seated over the mating tab. This facilitates correct assembly in hard-to-reach areas such as under dashboards, recessed switch tabs, etc. Safety is enhanced by the locking capability of the product. Unless the depressor is deliberately deflected, either manually or by withdrawal force applied directly to the optional housing, a terminal will not easily come off of the tab. Thus, the potential of exposed live parts or disruption of critical circuitry due to improperly seated or accidentally removed terminals is greatly reduced.

Mark I

  • Lowest insertion force with high retention force
  • Design carries higher current than MKII or MKIII due to the transition area not being cut out to create the locking detent.
  • Detent lever is additional lever rolled back from front of terminal with best spring
  • Location of dimple allows low insertion force.

Mark II

  • Low insertion force with high retention force
  • Detent lever is created by punching out material from transition area of terminal.
  • Rolls have flared edges to reduce insertion force by tab not sliding on bare edge
  • Priced competitively
  • Most similar to competitive product in the market.

Mark III

  • Insertion force about the same as a FASTON.
  • Detent lever is created by punching out material from transition area of terminal.
  • Transition area smaller than MKII.


  • Reduced insertion force
  • Locks onto tabs containing holes
  • Housing insulates and serves as a removal tool
  • “Snap” action tells assembler receptacle is mated properly
  • Terminated by automatic or semi-automatic equipment
  • Single and multiple circuit housings available
  • Recognized under the Component Program of Underwriters Laboratories Inc., File Nos. E66717 and E28476
  • Certified by Canadian Standards Association File No. LR7189A


  • Vending/gaming machines
  • Automotive
  • White goods
  • Medical
  • Industrial