With clamping kits GN 511.1 swivel clamp mountings GN 482 can be combined with T-Swivel clamp mountings GN 483 and attachment clamp mountings GN 484 with the same k-dimensions into swivel clamp mounting joints. The centering bushing positions the swivel clamp mountings in relation to each other. During assembly, the knurled threaded bushing is inserted by the clamping screw itself and by pressing into one of the two swivel clamp mountings and so serves to clamp the articulated joint. The matching clamping kits are shown in the dimensional tables of the appropriate swivel clamp mountings.