Tighten and loosen nuts and bolts with the open end or the polygonal ring end.

Set of 1/2'' hex sockets, imperial, Fervi SN4P3N027
Key features
- Spark plug socket sizes5/8", 13/16"
- Extension dimensions3", 10"
- Gross weight (kg)4,28
- Packaging dimensions (mm)350 × 80 × 250
- EAN8012667275242
What it is
The Fervi SN4P3N027 series is an assortment of hex sockets in inch sizes with 1/2" drive. The set includes spark plug sockets in sizes 5/8" and 13/16", ideal for work on the ignition system, and 3" and 10" extensions that make it possible to reach even the most recessed points. The set has a gross weight of 4.28 kg and is supplied in a 350x80x250 mm pack.
A ratchet and socket set is an assortment of sockets, a reversible ratchet, extensions and accessories for tightening and loosening hexagon nuts and bolts.
What it is for
Used for vehicle maintenance, in the workshop and on the road and for tightening nuts and bolts where torque must be accurate and repeatable.
How to use it
Choose a socket of the exact nut size and fit it onto a ratchet with the same drive (1/4", 3/8" or 1/2"), setting the direction of rotation with the selector. Pull the ratchet towards you, keeping the socket fully seated, using extensions and universal joints for awkward spots. For specified tightening torques, finish with a torque wrench, and use only impact sockets on impact wrenches.
Where it is used
- Mechanical engineering industry
- Mechanical workshops
Technical data
- Spark plug socket sizes: 5/8", 13/16"
- Extension dimensions: 3", 10"
- Gross weight (kg): 4,28
- Packaging dimensions (mm): 350 × 80 × 250
Who it is for
Designed for industrial maintenance technicians and mechanics.
Related products
- Set of 1/4'' hex sockets, imperial, Fervi S520
- Set of sockets and bits Fervi 0277
- Impact extension bar for socket wrenches Fervi PI402200 — from the category Impact Sockets
- Set of polished chrome combination spanners Fervi 0208 — from the category Combination Spanners
- Deep Tstak IP54 case with wheels DeWalt DWST83347-1 — from the category Tool Trolleys
- Browse the whole category: Ratchet and Socket Sets
Before you order
Tell us the quantities you need and the intended use: if there is a more suitable version, or an equivalent available sooner, we will let you know.
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 €75 – €125 + VAT
Incl. 22% VAT: €91,50 – €152,50
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 6
| Spark plug socket sizes | 5/8", 13/16" |
|---|---|
| Extension dimensions | 3", 10" |
| Gross weight (kg) | 4,28 |
| Packaging dimensions (mm) | 350 × 80 × 250 |
| EAN | 8012667275242 |
| Item code | SN4P3N027 |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Tighten and loosen nuts and bolts when fitted to the ratchet, without damaging the corners.
Lubricate, free up and protect against rust when sprayed directly onto the part.
Transmit the driver's force to the screw, with the right profile for each head.
For safety
Protect hands from abrasion, dirt, liquids and minor cuts while keeping a firm grip.





