Fischer HM 8 × 54 SS cavity fixing with hex-head screw, box of 50

Fischer HM 8 × 54 SS cavity fixing with hex-head screw is a universal metal anchor for boards 7–21 mm thick. The folding arms create a large bearing area behind the board, delivering high load capacity and reliable indoor installations.

Benefits and unique features

• Includes a metric hex-head screw – fast, repeatable installation.
• Can be loosened and re-tightened thanks to the internal metric thread.
• Anti-rotation teeth grip the board and prevent spinning during screwdriving.
• Large support area of the opened arms – suitable for heavier fixtures.
• For pre-positioned installation; compatible with HM-Z setting pliers.

Properties and applications

• Base materials: gypsum plasterboard and fibreboard, hollow-core slabs, lightweight boards made of wood wool, chipboard and other wood-based panels.
• Typical uses: luminaires, pictures, light shelves, towel rails, mirror cabinets, rail curtain tracks and auxiliary structures.
• Installation notes: match anchor length to board thickness (7–21 mm). When tightening, the arms open and clamp against the back of the board. When using a driver, remove the pre-set screw first.

Technical parameters

Storage recommendations

Store in the original closed packaging, in a dry and clean place, away from moisture and heat sources. Protect threaded parts from contamination and mechanical damage.

FAQ

1) Which drill bit is needed for HM 8 × 54?
Use a 12 mm bit; minimum hole depth is 60 mm.

2) What board thickness range is supported?
Boards 7–21 mm thick.

3) Can the screw be repeatedly removed and reinstalled?
Yes, the internal metric thread allows repeated removal and re-tightening.

4) Typical applications?
Mounting lights, pictures, light shelves, bathroom cabinets and curtain rails on boards.

5) How to prevent the anchor from spinning?
The anti-rotation teeth bite into the board surface and stabilize the fixing during screwdriving.