Guiding member for a disk brake pad in a cap which is composed of two arms connected by two bars, each arm having at the two ends thereof an axial housing which has a substantially rectangular cross section and which has a base, a lower surface and an upper surface, the housing being surmounted by a stud, - the guiding member being formed by a spring steel band which is folded in order to be fixed to the stud and in the housing of the arm and to receive in an axially sliding manner the corresponding lug of the pad, in order to guide it and to press it into the housing, which guiding member is characterized by - a body which has a cross section in the form of a U on its side and which is substantially rectangular in order to be positioned in the housing having an external radial surface which moves into abutment against the upper surface of the housing, followed by a base which moves into abutment against the base of the housing and an internal radial surface, and which is continued by * an external abutment surface which moves into abutment against the front face of the stud and which carries two tongues in order to form lateral stops which extend at one side and the other of the stud and by * an internal abutment surface which moves into abutment against the front internal surface of the arm and which receives the front lower surface of the pad under the lug, the internal radial surface is provided with a locking tongue in order to press against and become engaged in the lower surface of the housing. - the guiding member being formed by a spring steel band which is folded in order to be fixed to the stud and in the housing of the arm and to receive in an axially sliding manner the corresponding lug of the pad, in order to guide it and to press it into the housing, - a body which has a cross section in the form of a U on its side and which is substantially rectangular in order to be positioned in the housing having an external radial surface which moves into abutment against the upper surface of the housing, followed by a base which moves into abutment against the base of the housing and an internal radial surface, and which is continued by * an external abutment surface which moves into abutment against the front face of the stud and which carries two tongues in order to form lateral stops which extend at one side and the other of the stud and by * an internal abutment surface which moves into abutment against the front internal surface of the arm and which receives the front lower surface of the pad under the lug, the internal radial surface is provided with a locking tongue in order to press against and become engaged in the lower surface of the housing. * an external abutment surface which moves into abutment against the front face of the stud and which carries two tongues in order to form lateral stops which extend at one side and the other of the stud and by * an internal abutment surface which moves into abutment against the front internal surface of the arm and which receives the front lower surface of the pad under the lug, the internal radial surface is provided with a locking tongue in order to press against and become engaged in the lower surface of the housing.