Abstract: Female electrical contact member is made from a metal blank cut out and bent to shape so that it has at one end electrical conductor fixing elements and at the other end a rectangular section passage having a bottom wall, a top wall and two side walls from which are cut out elastic bars bent towards the interior of the passage to constitute a clamp adapted to grip a male tongue inserted through an insertion opening of the passage. The free ends of the bars face towards the insertion opening. The elastic action of the bars is strengthened by bracing bars of an attached, initially separate member cooperating with the elastic bars. The attached member comprises two plates fixed against the side walls and from which the bracing bars are cut out.

Abstract: An electrical connection housing member comprises a body with passages and a retaining lug for an electrical contact member. The body includes slideways with detents for receiving a locking member which has an end wall and locking bars which cooperate with the detents and steps to lock the resilient lugs.

Abstract: Electrical connector casings comprising a female casing member and a male casing member the male casing member, wherein includes an inclined elastic bar fastened at a point partway along its length to an abutment and the female casing member has a passage adapted to receive the elastic bar. Partway along the length of this passage is a projection on the path of the abutment and having, on the side facing the opening of the female casing member, a steep edge joining at right angles to a part joining at right angles a .retaining steep edge which, with the abutment, locks the two casing members together.

Abstract: A female electrical contact member has at one end crimping lugs and at the other end a rectangular cross-section receptacle with a floor wall and a ceiling wall. The floor wall is extended and bent towards the inside of the receptacle to form a spring strip. A male tab inserted into the receptacle is therefore clamped between this strip and the ceiling wall. A cut-out bar in the floor wall is bent so that it extends under the spring strip and cooperates with the latter.