Drill concrete, brick and stone for wall plugs and anchors using a hammer drill.

Undercut Anchor Zykon FZA-I, Stainless A4, Fischer
Key features
- Hole diameter d0 (mm)12
- PackBox
- Pieces per pack25
- ThreadM12
- Stainless steelA4
- ETA approval98/0004
What it is
Undercut Anchor Zykon FZA-I, Stainless A4, Fischer. Key specifications: hole diameter d0 (mm) 12, pack Box, pieces per pack 25.
The undercut anchor is a steel anchor that engages in an enlargement of the hole at the bottom, to withstand very high loads and also dynamic stresses, especially in concrete.
What it is for
Used for anchoring shelves, brackets and structures to walls, for mechanical fixing of structures and components to walls, ceilings and floors and for structural fixings, where the fixing is load-bearing and must be calculated.
How to use it
Drill the hole with the drill bit indicated, clean it carefully, insert the anchor and expand it or make it engage in the undercut with the dedicated tool. Fix the part and tighten the nut to the stated torque. Follow the installation instructions strictly.
Where it is used
- Industrial construction
- Residential construction
- Building services
Technical data
- Hole diameter d0 (mm): 12
- Pack: Box
- Pieces per pack: 25
- Thread: M12
- Stainless steel: A4
- ETA approval: 98/0004
- Concrete class: 20/25
Who it is for
Designed for electricians, metal fabricators and plumbers.
Standards and compliance
Expansion anchors for concrete comply with Eurocode 2 Part 4 (EN 1992-4) and are ETA-certified under the EAD (formerly ETAG 001). CE marking is mandatory under EU Regulation 305/2011 (CPR), with materials compliant with EN ISO 3506 (A2 / A4).
Related products
- Undercut Anchor Zykon FZA-I — Female Version, Fischer
- Undercut Anchor Zykon FZA-I, Fischer
- Undercut drill bit FZUB for Zykon FZA anchors Fischer — from the category Drill Bits for Granite, Masonry and Concrete
- Pneumatic rock drill PK100 Breaker — from the category Rotary Hammers
- Combination spanner 8 mm Stanley STMT95908-0 — from the category Combination Spanners
- Browse the whole category: Heavy-Duty Anchors
Before you order
In your request, please state the diameter and the quantities required, so we can give you the right quotation first time.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
Specifications 7
| Hole diameter d0 (mm) | 12 |
|---|---|
| Pack | Box |
| Pieces per pack | 25 |
| Thread | M12 |
| Stainless steel | A4 |
| ETA approval | 98/0004 |
| Concrete class | 20/25 |
Compare with similar models
Technical data declared by the manufacturers. An empty cell means the figure is not declared.
| Feature |
This model
Undercut Anchor Zykon FZA-I, Stainless A4, Fischer
|
Undercut Anchor Zykon FZA-I, Fischer
|
Undercut Anchor ZYKON FZA, Fischer
|
|---|---|---|---|
| Brand | Fischer | Fischer | Fischer |
| Hole diameter d0 | 12 mm | 12 mm | 18 mm |
| Pack | Box | Box | Box |
| Pieces per pack | 25 | 25 | 10 |
| Thread | M12 | M10 | M12 |
| ETA approval | 98/0004 | 98/0004 | 98/0004 |
| Concrete class | 20/25 | 20/25 | 20/25 |
| View product → | View product → |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Drill concrete, masonry and stone by combining rotation and hammer action.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.
Drill and chisel concrete and masonry with the quick-release fitting of light rotary hammers.







