A fastening system for fastening installation elements in a cabin of a vehicle , having a fastening element and at least one fastening device , comprising the fastening device - a flanged housing having an interior formed therein, - a closure element , - a hollow ball element which can be inserted into the interior of the flange housing , and - a ball insert insertable into the hollow ball element with an opening having first engagement means wherein the interior of the flanged housing has a first spherical bearing surface which, for pivoting the hollow ball element , is designed to correspond with an outer surface of the hollow ball element , a first guide device allowing pivoting exclusively about a first pivot axis , wherein the hollow ball element has on the inside a second spherical bearing surface which is designed to correspond with an outer surface of the ball insert for pivoting the ball insert , wherein a second guide device permits pivoting exclusively about a second pivot axis , wherein the closure element closes the interior at least in sections in such a way that the hollow ball element is held in the interior , the fastening element being insertable into the ball insert and having second engagement means , and wherein the first and second engagement means are formed such that in a first rotational position the fastening element can be freely inserted into the opening and in a second rotational position the first and second engagement means engage one another. - a flanged housing having an interior formed therein, - a closure element , - a hollow ball element which can be inserted into the interior of the flange housing , and - a ball insert insertable into the hollow ball element with an opening having first engagement means wherein the interior of the flanged housing has a first spherical bearing surface which, for pivoting the hollow ball element , is designed to correspond with an outer surface of the hollow ball element , a first guide device allowing pivoting exclusively about a first pivot axis , wherein the hollow ball element has on the inside a second spherical bearing surface which is designed to correspond with an outer surface of the ball insert for pivoting the ball insert , wherein a second guide device permits pivoting exclusively about a second pivot axis , wherein the closure element closes the interior at least in sections in such a way that the hollow ball element is held in the interior , the fastening element being insertable into the ball insert and having second engagement means , and wherein the first and second engagement means are formed such that in a first rotational position the fastening element can be freely inserted into the opening and in a second rotational position the first and second engagement means engage one another. wherein the interior of the flanged housing has a first spherical bearing surface which, for pivoting the hollow ball element , is designed to correspond with an outer surface of the hollow ball element , a first guide device allowing pivoting exclusively about a first pivot axis , wherein the hollow ball element has on the inside a second spherical bearing surface which is designed to correspond with an outer surface of the ball insert for pivoting the ball insert , wherein a second guide device permits pivoting exclusively about a second pivot axis , wherein the closure element closes the interior at least in sections in such a way that the hollow ball element is held in the interior , the fastening element being insertable into the ball insert and having second engagement means , and wherein the first and second engagement means are formed such that in a first rotational position the fastening element can be freely inserted into the opening and in a second rotational position the first and second engagement means engage one another. <EOS>