Is there a standard pin header with a 3mm pitch that is similar to the common 0.1" pitch pin headers (shown in photo below)? I'm not even sure what the correct name for these are. What is the best way to search for a part like this on Mouser or Digikey? My searches keep coming up with weird shrouded plastic housing things. Thanks!
The part I was interested in connecting to is similar to this, with half-holes along the edges: