Abstract: The door lock and jamb strike plates may be stamped or otherwise formed of metal plate of conventional thickness, but include screw passages and receptacles for the screw heads having axes defining oblique angles between the planes of the plates and the screw axes. In the case of the door lock or deadbolt mortise plates, the screw head receptacles and passages are angled away from one another, with their axes oriented away from the knob and latch mechanism therebetween. In the case of the jamb strike plate or jamb deadbolt plate, the screw head receptacles and passages are oriented to pass into the center of the wood structure behind the plate to provide additional strength. The plates may be provided individually or as a kit, with or without screws.