The invention relates to a through-connector for a metal structure (1) having a through-opening, said through-connector comprising: at least one generally L-shaped connection pin (9) including a first arm (9a) and a second arm (9b) which are formed as a single piece; and at least one insulating component (11) to be secured in the opening and comprising at least one passage for receiving the pin (9), said passage including: a first portion which has a partially open circumference and is substantially parallel to the structure in order to receive the first arm (9a), retaining and orienting said arm such that, after mounting the free end thereof is maintained at a pre-determined distance from the structure, allowing reflow soldering; and a second portion which has a closed circumference and is substantially perpendicular to the first portion in order to receive the second arm (9b), retaining and orienting same in such a way that the free end thereof can come into contact with a mating connector.