Screw anchor FISCHER 532751 FH II 12/M8 high-performance anchor, pack of 2

The fischer high-performance anchor FH II-I is an internal-threaded zinc-plated steel anchor supplied here as a pack of two FH II 12/M8 anchors. It is installed in a pre-positioned manner: during setting with a hex driver the cone is pulled into the expansion sleeve so the sleeve expands against the hole wall, while compression on the black plastic ring secures the threaded connection and ensures the sleeve sits below the drill-hole edge in accordance with approvals. The FH II-I is intended for mechanical fastening of loads such as air-conditioning units, sprinkler systems and pipeline routes where a reliable M8 threaded connection is required.

Advantages

The anchor offers rapid expansion for fast installation and a visual setting control via the plastic ring ensures approval-compliant fixing without the need for a torque wrench. It accepts conventional metric screws and threaded rods, giving flexibility on site, and the zinc-plated steel construction provides durable mechanical performance in suitable base materials.

Suitable for

• Fastening air-conditioning units
• Installing sprinkler system supports
• Securing pipe routes and brackets
• Applications requiring M8 threaded connections in solid or hollow substrates

When it may not be suitable

This anchor is designed for use in solid and some hollow base materials; it may not be appropriate for very soft substrates where mechanical expansion cannot develop sufficient load transfer. It is not intended for applications requiring corrosion resistance beyond zinc plating or for use with non-metric fasteners.

Key specifications

• Anchor type: internal-threaded expansion anchor
• Material: zinc-plated steel
• Anchor size (sleeve diameter): 12 mm
• Thread compatibility: M8 bolts/rods
• Packaging: pack of 2 anchors

How to use

Drill the specified hole to the required diameter and depth, clean the hole, insert the pre-positioned FH II sleeve so the plastic ring sits flush with the surface, then set the anchor using a hex driver. During setting the cone is pulled into the sleeve causing expansion against the hole wall while the compression on the black plastic ring secures the assembly. Use appropriate M8 screws or threaded rods and follow base-material-specific installation depths and spacing from the approval or manufacturer instructions.

What to consider before purchase

• Verify the base material type (solid or hollow) and the anchor's suitability for that substrate
• Confirm required load capacity and use appropriate M8 fasteners
• Check drilling diameter and embedment depth for the 12 mm sleeve
• Consider corrosion requirements; zinc plating offers basic protection

Usage recommendations

Use the FH II 12/M8 with the correct drill diameter and cleaning procedure for the hole; set each anchor fully with a hex driver and visually confirm the plastic ring compression to ensure approval-compliant fixing. For structural or safety-critical applications follow detailed manufacturer approvals and load tables.