Tighten and loosen nuts and bolts with sockets, without taking the tool off at every turn.

Connector for socket wrenches Fervi RN4043NA
Key features
- Length (mm)35
- Packaging dimensions (mm)44 × 18 × 100
- Gross weight (kg)0,05
- EAN8012667281199
What it is
The Fervi RN4043NA socket wrench adaptor is an accessory that connects drive tools and sockets, allowing torque to be transmitted during tightening and loosening. With a length of 35 mm and a weight of only 0.05 kg, it is a compact, lightweight component, designed to work comfortably even in the tightest spaces.
The socket adapter is an adapter with square drives of different sizes, which allows sockets of one size to be fitted on a ratchet of another.
What it is for
Used for tightening nuts and bolts where torque must be accurate and repeatable.
How to use it
Fit it fully between ratchet and socket. When fitting a small socket on a large ratchet, avoid forcing, because the longer lever can damage the socket and the adapter.
Where it is used
- Mechanical engineering industry
- Mechanical workshops
Technical data
- Length (mm): 35
- Packaging dimensions (mm): 44 × 18 × 100
- Gross weight (kg): 0,05
Who it is for
Designed for auto electricians, industrial maintenance technicians and mechanics.
Related products
- Connector for socket wrenches Fervi RN4045NA
- Connector for socket wrenches Fervi RN4034NA
- Ergonomic ratchet Fervi — from the category Ratchets
- Set of polygonal sockets in soft foam tray Fervi TM01/023 — from the category Ratchet and Socket Sets
- Impact socket, Fervi BI4E1N022 — from the category Impact Sockets
- Browse the whole category: Socket Wrenches
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.
Indicative price €2,35 – €3,92 + VAT
Incl. 22% VAT: €2,87 – €4,78
Indicative, excluding VAT, depends on quantity, ex works: the final price is the one in your quote
Source: Listino Fervi (fervi.com) · updated 21/07/2026
Specifications 5
| Length (mm) | 35 |
|---|---|
| Packaging dimensions (mm) | 44 × 18 × 100 |
| Gross weight (kg) | 0,05 |
| EAN | 8012667281199 |
| Item code | RN4043NA |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Lubricate, free up and protect against rust when sprayed directly onto the part.
Keep tools and small parts organised and secure during transport.
Tighten and loosen nuts and bolts with the open end or the polygonal ring end.
For safety
Protect hands from abrasion, dirt, liquids and minor cuts while keeping a firm grip.





