Multipolar Electric Plug Connector Part, and Plug Connector Arrangement

A plug connector assembly comprising:

• a first plug connector part;
• a second plug connector part;
• wherein each plug connector part has a housing having a first housing part and a second housing part, wherein the housing parts are joined together parallel to a plug contact insertion direction, the housing parts have lateral surfaces which face one another when the housing parts are joined together, the housing parts have integrally formed parallel grooves at their lateral surfaces, the grooves form parallel receiving channels when the housing parts are joined together, the receiving channels are to receive plug contacts, each receiving channel includes a projection;
• a plurality of plug contacts having integrally formed lances, wherein the lances engage the projections of the receiving channels when the plug contacts are fully received within the receiving channels;
• and
• wherein the first housing part includes spring tongues along the grooves of the first housing part for fixing the plug contacts within the receiving channels, the spring tongues have tab-like sections which extend into the receiving channels and engage the plug contacts to fix the plug contacts within the receiving channels in a form-fit manner.