multiple welded plates the one piece cast traction pin is also solid to reduce the potential for stress related failure of the traction pin during normal operation of the railway car application_number US 86478701 A description referring to the figures wherein like numerals indicate like elements there is shown in fig1 a railcar cab 10 and truck assembly 12 located between and joining the railcar cab and truck assembly is a traction pin 14 as known by those of skill in the art the traction pin serves to join the cab and truck assembly and permit rotatable movement of the cab relative to the truck assembly referring to fig2 4 there is depicted a prior art traction pin assembly 20 used to join a railcar cab and truck assembly the prior art traction pin assembly includes a traction pin 22 and multiple plates welded to the traction pin 22 as conventional the traction pin 22 is welded to a circular steel plate 24 and a square steel plate 26 the plates 24 26 are in turn welded to the underframe of the cab or house assembly of the railcar the steel plates 24 26 are typically roll formed by a rolling mill and thus have mechanical properties dependent on the direction of the roll referring to fig5 the traction pin assembly 20 is mounted to several components of the underframe of the cab as depicted the square steel plate 26 is welded to bottom plate 50 plate 50 is welded to main sills 52 which are located between the bottom plate 50 and a top plate 54 reinforcing members 56 are also located between the circular plate 24 and the top plate 54 the top plate 54.