A plug contact set, comprising a plug contact strip (10) having several first plug contacts (12, 14) arranged in a first housing (11), at least one of which is formed as a checking contact (14) having a shorter length than the rest of the plug contacts (12), and having a plug connector (20) having several second plug contacts (22) arranged in a second housing (21), at least one of which is configured to come into electrical contact with the checking contact (14), wherein the first housing (11) has at least one first latch element (31) and the second housing (21) has at least one second latch element (32) which are configured to latch together when the first plug contacts (12) are completely contacted with the second plug contacts (22), is characterised in that the second housing (21) has a third latch element (33) which can be latched with the first latch element (31) and which is arranged to be spaced apart from the second latch element (32) in the plugging direction (S) in such a way that, by latching the third latch element (33) with the first latch element (31), an as clearance-free as possible fixing of the second housing part (21) on the first housing part (11) in the completely contacted state of the first and second plug contacts (12, 14; 14) is achieved.