Pump or fluid-powered motor connection

A connection for a pump or fluid-powered motor, comprising:

• a mount location defining an X-Y plane and comprising a plurality of threaded bores for receiving fasteners, a pilot recess or opening, a portion of a rotational power coupling defining a longitudinal axis, and a first torque pin feature, the plurality of threaded bores being arranged in a first rectangular pattern with an X-spacing and a Y-spacing and the torque pin feature being arranged a first distance from the longitudinal axis on the Y-axis, wherein a ratio of the first distance to the pilot diameter ranges from approximately 0.50 to approximately 0.70;
• and
• a flange configured for securing to the mount location, the flange comprising a generally rectangular plate having a plurality of bolt holes, a pilot projection defining a pilot diameter and configured for nested engagement with the pilot recess or opening, a second torque pin feature, and a through bore with a drive shaft extending therethrough, the plurality of bolt holes arranged in a second rectangular pattern corresponding with the first rectangular pattern, and the second torque pin feature being arranged along the Y-axis a second distance corresponding to the first distance.