A fluidic connector, comprising: - a female tubular fitting having a first axis, - a tubular male fitting having a second axis and configured to engage coaxially with the female fitting, and - a generally U-shaped metal pin mounted astride on the female fitting, this pin comprising two lateral branches (16a, 16b), portions of which are configured to pass through at least one slit in the female fitting and to be engaged in a gorge in the male fitting to block it axially with respect to the female fitting, the pin being elastically deformable by moving its branches (16a, 16b) apart and close together and being able to adopt several configurations, in particular between a close together configuration in which said portions are at a distance D1 from one another and are housed in the gorge, and a spaced apart configuration in which said portions are at a distance D2 from one another and allow the male fitting to be removed from the female fitting, D2 being greater than D1, characterised in that the pin is axially movable on the female fitting from an inoperative position in which its branches (16a, 16b) are held spaced apart by the female fitting so that said portions are at a distance D3 from one another, D3 being between D1 and D2, to an operative position in which said portions are located at the level of said at least one slit and are able to pass through it by elastic return, and in that the male fitting comprises a part (12a2) configured to be engaged in the female fitting and comprising an external diameter which is greater than D3, so that, when the male fitting is engaged in the female fitting, this part (12a2) cooperates directly with said portions to move the pin from its inoperative position to its operative position. - a female tubular fitting having a first axis, - a tubular male fitting having a second axis and configured to engage coaxially with the female fitting, and - a generally U-shaped metal pin mounted astride on the female fitting, this pin comprising two lateral branches (16a, 16b), portions of which are configured to pass through at least one slit in the female fitting and to be engaged in a gorge in the male fitting to block it axially with respect to the female fitting, the pin being elastically deformable by moving its branches (16a, 16b) apart and close together and being able to adopt several configurations, in particular between a close together configuration in which said portions are at a distance D1 from one another and are housed in the gorge, and a spaced apart configuration in which said portions are at a distance D2 from one another and allow the male fitting to be removed from the female fitting, D2 being greater than D1, characterised in that the pin is axially movable on the female fitting from an inoperative position in which its branches (16a, 16b) are held spaced apart by the female fitting so that said portions are at a distance D3 from one another, D3 being between D1 and D2, to an operative position in which said portions are located at the level of said at least one slit and are able to pass through it by elastic return, and in that the male fitting comprises a part (12a2) configured to be engaged in the female fitting and comprising an external diameter which is greater than D3, so that, when the male fitting is engaged in the female fitting, this part (12a2) cooperates directly with said portions to move the pin from its inoperative position to its operative position.