Abstract: A fastener for receiving a sink unit in a worktop has a plastics clip for attaching to a tab or rail and a hinged clamping member (11) which is tightened up against the underside of the worktop by a screw. The screw can be pressed through a bore in the hinge pin and self-tap into a non-threaded passage in the clip when the clamping member is hinged to engage under the worktop. The bore through the hinge pin has small flexible tags projecting into it past which the screw thread can snap, but which retain the screw when that is not engaged with the clip. The hinge pin and the clip have mutually engageable detents which locate the pin, and thus the clamping member, in either the operative position, for engaging the worktop, or the non-operative position with the clamping member swung back free of the worktop.

Abstract: A fastener for securing a sink unit in a worktop has a clip (11) for attachment to a rail and a hinged clamping member (12) which is tightened up against the underside of the worktop by a screw (25). This threads through the hinge pin (13), and when undone allows the clamping member to swing back to and stay in an inoperative position where it will clear the edge of the hole of the worktop (19) as the unit (20) is lowered in. Doing up the screw causes the clamping member to swing and project a portion (21) under the worktop. The clamping member has guide fingers (23) which engage diametral slots (24) in the ends of the hinge pin.