Join metal parts, with a nut or in a tapped hole, so they can be taken apart.

Reducer fittings RDM and GRD Fischer
Key features
- Thread atM8
- Length (mm)40
- Pieces per pack50
- ThreadM10
What it is
The RDM and GRD Fischer reducer is a threaded connecting element with an M8 type A thread and a length L of 40 mm, available in a pack of 50 pieces. It makes it possible to adapt different threads to one another in fixing and support systems, simplifying the connections between components.
A nut is the female threaded fastener that, screwed onto a screw, bolt or threaded rod, completes the fixing; the category also includes lock nuts, self-locking nuts and coupling nuts.
What it is for
Used for assembling steel structures, for mechanical fixing of structures and components to walls, ceilings and floors and for erecting steelwork and structural carpentry.
How to use it
Choose a nut with the same diameter, pitch and material as the screw or rod, zinc-plated with zinc-plated and stainless with stainless. Start the first few threads by hand to avoid damaging them, then tighten with a spanner or socket of the correct size, fitting a washer where needed. Where there is vibration, use a self-locking nut or a lock nut.
Where it is used
- Industrial construction
- Building services
- Mechanical engineering industry
Technical data
- Thread at: M8
- Length (mm): 40
- Pieces per pack: 50
- Thread: M10
Who it is for
Designed for electricians, metal fabricators, plumbers and industrial maintenance technicians.
Related products
- Sleeve VM Fischer
- Sleeve RD Fischer
- Threaded rod G HDG Fischer — from the category Threaded Rods
- Wide washer for screw FBS 10 Fischer — from the category Flat Washers
- Threaded wall plug GS Fischer — from the category Bolts and Metric Screws
- Browse the whole category: Hex Nuts
Before you order
In your request, please state the length 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 4
| Thread at | M8 |
|---|---|
| Length (mm) | 40 |
| Pieces per pack | 50 |
| Thread | M10 |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Spread the load under nuts and screws and stop the fixing coming loose.
Make tie rods, hangers and chemical anchor fixings together with nuts, washers and connectors.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.




