Board-to-board connectors that may provide a durable and reliable connection, save board space, may be easy to manufacture, and may be simple to use during device assembly. One example may include a receptacle including a number of contacts forming electrical connections with traces or planes in or on a printed circuit board. A boss may be included as part of the receptacle and the boss may be connected to the printed circuit board. An insert may be mated to the receptacle. Contacts in the insert may form electrical connections with traces or planes in a second or flexible circuit board. A cowling may be placed over the flexible circuit board to act as a stiffener. A fastener, such as a screw, may be placed through openings in the cowling, second or flexible circuit board, and insert, and into the boss.