Markets for most “high tech” products have become global. To better serve this global marketplace, many OEMs are attempting to specify metric fluid power components in their new product designs. OEMs typically try to switch completely to metric threaded components however often this goal is more difficult than it initially appears as many critical components continue to be offered only with imperial threads. For this reason, adapter fittings become critical to OEM design engineers responsible for specifying fluid power products. This series of new miniature adapter fittings is specifically for connecting metric to imperial threads.