We install tail connectors of practically all varieties.  That includes latching, polarized, and locking connectors.  It also includes single and double row connectors with any number of pins.  These connectors have a .100” pitch, but .050” is also available.  ZIF (zero insertion force) connectors are a lower cost alternative.  The pitch of these connectors come in 0.100”, 0.050”, and 1 mm.