Method for producing an assembly comprising a form-fitting connection having a precipitation-hardened form-fitting region, in which at least two components of an assembly (1, 2, 3; 11, 12, 13, 16, 17, 18; 21, 26, 29) are provided that are interconnected in a form-fitting manner, each of the components having a form-fitting region which can come into contact with at least one other form-fitting region of the other componentto be connected in order to produce a form-fitting connection by limiting at least one degree of freedom of movement of the connected components relative to one another, at least one of the components having at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) for providing the form-fitting connection, which region is reshaped to produce the form-fitting connection after the components to be connected are arranged relative to one another, in order to produce the form-fitting connection, the at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) being formed from a material which can be hardened by the formation of precipitates, the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) being provided in a non-hardened state or being brought into a non-hardened state by solution annealing and subsequent quenching, the at least one component having the at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25), in the non-hardened state of the deformation form-fitting region, being arranged relative to at least one other componentto be connected, and the at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) being reshaped to form a form-fitting connection, the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25), after the reshaping of the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25), being subjected to an aging heat treatment in which the deformation form-fitting region (4,5,6,7; 16; 24,25) is hardened by the formation of precipitates, characterized in that the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) or the component having the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) is formed from a precipitation-hardenable nickel-based material or a precipitation-hardenable cobalt-based material. in which at least two components of an assembly (1, 2, 3; 11, 12, 13, 16, 17, 18; 21, 26, 29) are provided that are interconnected in a form-fitting manner, each of the components having a form-fitting region which can come into contact with at least one other form-fitting region of the other componentto be connected in order to produce a form-fitting connection by limiting at least one degree of freedom of movement of the connected components relative to one another, at least one of the components having at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) for providing the form-fitting connection, which region is reshaped to produce the form-fitting connection after the components to be connected are arranged relative to one another, in order to produce the form-fitting connection, the at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) being formed from a material which can be hardened by the formation of precipitates, the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) being provided in a non-hardened state or being brought into a non-hardened state by solution annealing and subsequent quenching, the at least one component having the at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25), in the non-hardened state of the deformation form-fitting region, being arranged relative to at least one other componentto be connected, and the at least one deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) being reshaped to form a form-fitting connection, the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25), after the reshaping of the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25), being subjected to an aging heat treatment in which the deformation form-fitting region (4,5,6,7; 16; 24,25) is hardened by the formation of precipitates, characterized in that the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) or the component having the deformation form-fitting region (4, 5, 6, 7; 16; 24, 25) is formed from a precipitation-hardenable nickel-based material or a precipitation-hardenable cobalt-based material.