Abstract: A mitre joint for picture frames and the like, wherein abutting portions of two members have pockets milled therein that are spaced a predetermined distance inwardly from their abutting surfaces. In addition, channels connect the pockets with the abutting surfaces. A foreshortenable fastener comprising a four sided hollow body, having front, back, top and bottom sides, is positioned in the adjacent channels, with the front and back sides positioned in the pockets. The front and back sides are wider than the top and bottom sides, which extend through the channels, and a screw extends through a hole in the top side into threaded engagement with the bottom side to bow the bottom side inwardly when the screw is tightened. This foreshortens the fastener and pulls the mitre joint together.