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.