Hydraulic control disk brake including a hydraulic actuation parking brake, which includes: - a brake caliper which includes a housing in which is formed at least one primary hydraulic cavity (PHC) axially open towards the front and which is axially delimited towards the rear by a transverse bottom wall of the housing ; - at least one main piston which is slidably axially mounted in a tight manner in the primary hydraulic cavity (PHC) of the housing in which the main piston axially delimits a primary hydraulic chamber , the main piston being able to cooperate with an associated disc brake pad; - a piston rod which is axially movable with the main piston , which passes in a tight manner through the transverse bottom wall , and which includes a threaded section ; - a wheel , for the axial locking of the piston rod , which is mounted screwed, in a reversible manner, on the threaded section of the piston rod in such a way as to be axially movable with respect to the piston rod , towards the rear by screwing or towards the front by unscrewing; - a controlled electric motor able to drive the locking wheel in rotation; - a transverse axial abutment plate that is axially stationary with respect to the housing and which includes a front transverse abutment surface , with the locking wheel being axially movable, with respect to the piston rod , between a front position and a rear abutment position in which the locking wheel is in axial bearing towards the rear against said front transverse abutment surface ; characterised in that the piston rod includes a section for rotationally locking the piston rod that axially extends through a central hole of the transverse abutment plate and which has an outer profile that is not of revolution and which is of complementary shape with an inner profile of the central hole in such a way that the transverse abutment plate immobilises the piston rod in rotation. - a brake caliper which includes a housing in which is formed at least one primary hydraulic cavity (PHC) axially open towards the front and which is axially delimited towards the rear by a transverse bottom wall of the housing ; - at least one main piston which is slidably axially mounted in a tight manner in the primary hydraulic cavity (PHC) of the housing in which the main piston axially delimits a primary hydraulic chamber , the main piston being able to cooperate with an associated disc brake pad; - a piston rod which is axially movable with the main piston , which passes in a tight manner through the transverse bottom wall , and which includes a threaded section ; - a wheel , for the axial locking of the piston rod , which is mounted screwed, in a reversible manner, on the threaded section of the piston rod in such a way as to be axially movable with respect to the piston rod , towards the rear by screwing or towards the front by unscrewing; - a controlled electric motor able to drive the locking wheel in rotation; - a transverse axial abutment plate that is axially stationary with respect to the housing and which includes a front transverse abutment surface , with the locking wheel being axially movable, with respect to the piston rod , between a front position and a rear abutment position in which the locking wheel is in axial bearing towards the rear against said front transverse abutment surface ; <EOS>