Fitting for installation between a sash and a fixed frame which are intended as structural elements of a window, a door or the like, • it being possible for the fitting to be switched to a tilted opening state which is provided as an opening state, and the fitting, in the tilted opening state, defining, as a pivot axis, a tilt axis about which the sash can be pivoted, relative to the fixed frame, into an opening position in the form of a tilted opening position and into a closed position when the fitting is installed, • the fitting comprising, as an opening limiting device, a tilted opening limiting device which, when installed, is provided between a sash spar extending in the transverse direction of the tilt axis and an opposite spar of the fixed frame and comprises a coupling element, which is provided on one of the structural elements, and a securing arm, which is provided on the other of the structural elements and can be rotated about an axis of rotation extending in parallel with the tilt axis, • the coupling element of the tilted opening limiting device being guided on the securing arm of the tilted opening limiting device in the radial direction of the axis of rotation of the securing arm and being supported along the tilt axis in the tilted opening state of the fitting when the sash is pivoted about the tilt axis, • the coupling element of the tilted opening limiting device, in the tilted opening state of the fitting, being arranged close to the axis of rotation of the securing arm when the sash is in the closed position and away from the axis of rotation when the sash is in the tilted opening position, and • the tilted opening limiting device having a movement limiter for the coupling element arranged away from the axis of rotation, by means of which movement limiter the coupling element arranged away from the axis of rotation is prevented from moving away from the axis of rotation of the securing arm when the sash is in the tilted opening position and thereby defines a maximum tilted opening width of the sash, characterized in that the fitting comprises a switchable anti-displacement device which, when installed, is provided between a tilt axis-side sash spar extending in parallel with the tilt axis and an opposite tilt axis-side spar of the fixed frame and has securing elements, one of which is provided as a sash-side securing element (10, 17, 52) associated with the sash and another of which is provided as a fixed frame-side securing element (12, 15, 53) associated with the fixed frame, and in that, when the fitting is in the tilted opening state, the anti-displacement device is switched to a locking state in which the mobility of the sash-side securing element (10, 17, 52) relative to the fixed frame-side securing element (12, 15, 53), and thus the mobility of the sash relative to the fixed frame, is at least limited along the tilt axis. • it being possible for the fitting to be switched to a tilted opening state which is provided as an opening state, and the fitting, in the tilted opening state, defining, as a pivot axis, a tilt axis about which the sash can be pivoted, relative to the fixed frame, into an opening position in the form of a tilted opening position and into a closed position when the fitting is installed, • the fitting comprising, as an opening limiting device, a tilted opening limiting device which, when installed, is provided between a sash spar extending in the transverse direction of the tilt axis and an opposite spar of the fixed frame and comprises a coupling element, which is provided on one of the structural elements, and a securing arm, which is provided on the other of the structural elements and can be rotated about an axis of rotation extending in parallel with the tilt axis, • the coupling element of the tilted opening limiting device being guided on the securing arm of the tilted opening limiting device in the radial direction of the axis of rotation of the securing arm and being supported along the tilt axis in the tilted opening state of the fitting when the sash is pivoted about the tilt axis, • the coupling element of the tilted opening limiting device, in the tilted opening state of the fitting, being arranged close to the axis of rotation of the securing arm when the sash is in the closed position and away from the axis of rotation when the sash is in the tilted opening position, and • the tilted opening limiting device having a movement limiter for the coupling element arranged away from the axis of rotation, by means of which movement limiter the coupling element arranged away from the axis of rotation is prevented from moving away from the axis of rotation of the securing arm when the sash is in the tilted opening position and thereby defines a maximum tilted opening width of the sash, the fitting comprises a switchable anti-displacement device which, when installed, is provided between a tilt axis-side sash spar extending in parallel with the tilt axis and an opposite tilt axis-side spar of the fixed frame and has securing elements, one of which is provided as a sash-side securing element (10, 17, 52) associated with the sash and another of which is provided as a fixed frame-side securing element (12, 15, 53) associated with the fixed frame, and in that, when the fitting is in the tilted opening state, the anti-displacement device is switched to a locking state in which the mobility of the sash-side securing element (10, 17, 52) relative to the fixed frame-side securing element (12, 15, 53), and thus the mobility of the sash relative to the fixed frame, is at least limited along the tilt axis.