Washers for screws has slits which are magnetic, holding them in place during assembly
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Lock for building door has slidable crank handle actuating metal bolt bar fitting into plastics cylindrical casing
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Window shutters installation kit has hinges around the inner edges of the shutter panels, to conceal the screw fastenings completely against a break-in when the shutters are closed
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Door protection system with lock mechanism including synthetic speech module that is activated by contact
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Furniture elements consisting of nodal point joints
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Connector
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Hollow screw connection for electric lamp
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Safety lock with cobalt in screw shaft and nut - has push-in peg anchored by bolt in screw shaft and nut and includes barb on peg to stop nut turning and has lock end filling out screw slit
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Plug-in safety lock in screw-connections
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Adjuster for door and furniture positioner fittings - has rotary disc and threaded shaft protruding from threaded socket
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Bicycle frame which can be easily dismantled - has frame tubes fastened to each other by screwed fittings made up of bush fitted in frame tube, bolt and nut
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connecting element
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Buttonhole screw with screw driver - has two or more holes punched out of side and has self cutting pins
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Quick assembly furniture unit - has polygonal connecting pieces and supporting lengthwise struts, with frame
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Quickly assembled furniture kit - consists of multi-angled connection and lengthwise piece with transverse struts
