Abstract: The connecting element (1) has a flat head (2) with an inside hexagon (3), a shaft (7, 8) and two studs (5, 6). The two studs (5, 6) are offset against one another through 90.degree.. The first stud (5) molded on the free shaft end is shorter than the second stud (6). The connecting element (1) is suited especially for connecting the side wall (37) of a supply body of a room divider with vertical, tubular columns (35) of the room divider. The connecting element is very rapidly mounted. In the installed state the second stud (6) holds the side wall (37) spaced from the column (35). For this reason the supply body is somewhat shorter than the clear distance between adjacent columns (35). The supply bodies, therefore, can be installed in and removed from the room divider very simply and rapidly subsequently.

Abstract: A first coupling part (6) consists of a bushing (10), a coupling bolt (11) and a ring (12) and is inserted into the end of a pipe (2). Two rest lugs (16) of the bushing (10) engage there into rectangular break-throughs (5) of the pipe (2). The coupling bolt (11) is turnable in the bushing (10) and lies with a head (26) against it. It is joined secure against with the ring (12). This has support shoulders (32) for the support of the face surfaces (4) of the pipes (2, 3). On its circumference it has two wrench surfaces (34). A second coupling part (7) is cup-shaped and is likewise snapped in place with rest lugs (42) in break-throughs (5) of the other pipe (3). The base (43) has an oblong hole (46) through which a bolt (45) of the coupling bolt (11) can be inserted. After turning of the bolt (11) through 90.degree. a spherical supporting surface (47) of the bolt (45) lies against the cylindrical support surface (44) of the second coupling part (7) and clamps the coupling.