A terminal group includes: a plurality of pin terminals, each pin terminal being formed of a metal wire of a predetermined length and being to be press-fitted and held in each of a plurality of terminal insertion holes of a connector housing. Some of the plurality of pin terminals have different overall lengths. The plurality of pin terminals respectively have a pair of press-fitting supports that protrude from both side edges of each of the plurality of pin terminals in a width direction at the same distant positions from a distal end in an insertion direction, and insertion direction rear end side surfaces of the press-fitting supports receive reaction force with respect to the terminal insertion holes in press-fitting.