A system (100, 600, 700) for fastening objects to a wall or ceiling (120) comprises a rear, wall-anchor section (105, 607, 705) with a bore, and a front, pivotable section (110, 602, 604, 720), rigidly abutted together with no gap, aligned by a projection (135), and connected by a "living" hinge, strap, flap, lanyard or other type of connector (115). The pivotable section has a sharpened tip (112, 630, 635, 725) for penetrating the wall while the fastener is forced into the wall by a hammer or other driving tool or device, or manually by hand. The two sections of the fastener have a tapered, elliptical cross-section (111) which both prevents rotation of the fastener and locally reduces load-responsive pressure in the wallboard. To install, the axes of the wall-anchor and pivotable sections of the fastener are first aligned. The fastener is forced into the wall one of the above means. Then a pin (140) is manually inserted into the bore of the wall-anchor section. When the pin meets the projection the pivotable section is forced to rotate about the hinge. A locking tooth (139) secures the pin by interfering with either threads or notches in the pin. Alternatively, the pin forces past the projection and wedges between the projection and the bore of the wall-anchor section.