Usage
The Fischer FNH 8x70mm steel nail sleeves are designed for quick and reliable fastening of frameworks, substructures, and metal profiles in concrete, dense natural stone, solid brick, and sand-lime stone. Ideal for use in construction or renovation projects requiring robust yet efficient anchoring.
Advantages
- Simple push-through installation without the need for separate screws or plugs
- Dacromet-coated sprung steel provides enhanced corrosion protection
- Suitable for a range of solid building materials including concrete and brick
- The collar design secures fixture position during installation
- Time-saving application reduces labor on site; less suited to hollow core substrates
Specifications
- Design & Material: Long-shaft steel anchor (nail sleeve) with Dacromet anti-corrosion coating; diameter: 8 mm; length: 70 mm; effective anchoring depth: 40 mm; max. fixture thickness: approximately 30 mm per fastener [3]. Packaging includes a box of 100 pieces.
- Sustainability & Certifications: Made from resilient spring steel with high corrosion resistance suitable for interior and protected exterior applications. Complies with manufacturer’s internal quality standards [3][9].
- Measurable Performance: Recommended load in concrete ≥ C12/15 is up to approximately Nrec:1.1 kN per fixing (mean ultimate load Nu:4.4 kN). Drill hole diameter: Ø8mm [3]. Minimum drill-hole depth required is at least as long as the anchor (approx. ≥80 mm).
- Differentiating Features: Enables rapid assembly by hammering directly into prepared holes—no additional dowels or screws needed. The expansion mechanism engages along the entire length inside the substrate [3]. Reliable holding power thanks to complete expansion within drilled hole.
How it works
The FNH nail sleeve is inserted through the fixture into a pre-drilled hole and driven flush using a hammer. As it advances, its expanding geometry securely anchors the frame element by generating tension along its full shaft inside solid masonry or concrete substrates.
