Socket for an electrical plug-and-socket connection

A socket for an electrical plug-and-socket connection, comprising:

• (a) a socket housing having a plug-in opening for mating with a plug, a cover for closing the plug-in opening if no plug is inserted into the socket and a plurality of contacts fixed in the plug-in opening for connecting the plug;
• (b) a contact insert with receptacle contacts to be connected with said contacts by inserting said contact insert on connection ends of said contacts, said receptacle contacts being connectable with a wire each;
• (c) a backshell to assemble said contact insert, said backshell being held circumferentially in said socket housing and having a flexible latch for fixing in a recess of the socket housing as a snap fit;
• and
• (d) a locking slider captively attached at said backshell and comprising two arms insertable into respective slits in said socket housing and said backshell, said slits in said socket housing and said backshell matching each other when said contact insert in said backshell is inserted on said connection ends of said contacts such that said arms of the locking slider inserted into said matching slits of said socket housing and of said backshell secure said backshell with said contact insert inserted onto the contacts.