Abstract: A floating stackable connector for connecting the conductors of stacked substrates such as printed circuit boards is provided. The connector includes an elongated insulator block having a plurality of parallel spaced spring contacts mounted in channels formed on the insulator block. The connector also includes a mounting means for mounting the connector to one of the substrates such that it may move or float between the substrates. In an illustrative embodiment the mounting means includes threaded inserts mounted within counterbored openings on either side of the insulator block adapted to be attached to threaded fasteners placed through one of the substrates.