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Screw & wall plug kit Fischer 519777
The Fischer cavity metal anchor HM‑S is a metal anchor designed for use with panel building materials such as gypsum fibre board and plasterboard. It is supplied as part of the Screw & wall plug kit Fischer 519777, which contains multiple pieces suitable for fixing lights, towel rails and curtain rails. The anchor is set in the pre-positioned installation and, when expanded, grips the reverse side of the board to create a secure hold.
The HM‑S series covers board thicknesses from 3 to 50 mm, making it suitable for many panel applications. Its metric internal thread allows attachments to be removed and refitted multiple times for flexible usage. Expanding arms provide a large bearing surface for increased load capacity, while peripheral claws bite into the board material to prevent rotation during installation.
Position the anchor in the drilled hole so it sits pre-positioned against the board. Set the fixing using the fischer installation pliers HM‑Z 1 by pulling the anchor into the cavity; the expanding arms will swing open and press against the reverse side of the board. Alternatively, the anchor can be expanded by tightening with a screwdriver or cordless screwdriver until secure. After expansion, fit the required screw into the metric internal thread and mount the fixture.
Use a correctly sized drill bit (approx. 12 mm) and select the HM‑S length suitable for the board thickness. For repeated removal and refitting, use the specified metric screws and avoid overloading the installed anchor beyond the board material’s load limits.
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