fixation pin 55 on the circuit board 65 the positioning aid 50 is first embodied as a flat disk 51 with two quarter circle sections 52 on an elevated level for example when the positioning aids are applied the soldered sides 32 1 of the electric contacts 30 are only inserted into the bore holes 53 1 at the higher sections 52 and subsequently the remaining contacts are inserted into the bore holes 53 2 of the flat section 5 1 according to a deliberate circular arrangement of the connection ends 32 1 of the electric contacts 30 which can be soldered the bore holes 53 1 53 2 are arranged in the positioning aid 50 additionally a borehole 54 is additionally required for the ground pin 17 of the screen cross 10 furthermore at the side facing the round body 40 two pins 57 are formed for fastening in the round body 40 while at the opposite side at least one fixation pin 55 is provided for the circuit board 65 additionally at the side of the positioning aid 50 facing the circuit board 65 a spacer is formed not shown in greater detail here in the form of an elevated equal sided cross for a distanced placement of the positioning aid on the circuit board 65 fig7 shows a plug in connector 1 confectioned to a certain extent with additionally a positioning aid 50 being fastened thereat the screen spring 60 in the circumferential groove 46 is discernible on the round body 40 by which the contacting to a front plate insert 75 is ensured described in the following a screen spring 60 here shown in the form of a helical spring accepts the ground contact between the screen cross 10 via the second.