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Hex socket, standard series, Fervi BN4E2N020

Code BN4E2N020

Key features

  • Connection3/4"
  • Opening (mm)20
  • StandardDIN 3124
  • Bn4e2n02710,10
  • Bn4e2n02810,10
  • Bn4e2n02910,10
See all 19 specifications

What it is

Hex socket, standard series, Fervi BN4E2N020. Key specifications: connection 3/4", opening (mm) 20, standard DIN 3124.

A socket is a cylinder with a hexagonal or bi-hex profile that fits over the nut and mounts on a ratchet; the category also includes box spanners and T-handle wrenches.

What it is for

Used in mechanical maintenance of machinery and plant, during scheduled shutdowns or breakdowns, 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 size with the ratchet's drive, standard or deep depending on how far the bolt protrudes. Push it fully onto the nut and pull the handle smoothly, without jerking. Chrome sockets are for hand use only: impact wrenches require impact sockets.

Where it is used

  • Industrial plant engineering
  • Mechanical engineering industry
  • Mechanical workshops

Technical data

  • Connection: 3/4"
  • Opening (mm): 20
  • Standard: DIN 3124
  • Bn4e2n027: 10,10
  • Bn4e2n028: 10,10
  • Bn4e2n029: 10,10
  • Bn4e2n030: 10,10
  • Bn4e2n032: 10,10
  • Bn4e2n033: 10,70
  • Bn4e2n034: 10,70
  • Bn4e2n035: 11,00
  • Bn4e2n036: 11,00
  • Bn4e2n038: 13,20
  • Bn4e2n041: 14,90

Who it is for

Designed for industrial maintenance technicians and mechanics.

Related products

Before you order

In your request, please state the connection type 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 €5,10 – €8,50 + VAT

Incl. 22% VAT: €6,22 – €10,37

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

Quantity
Specifications 19
Connection3/4"
Opening (mm)20
StandardDIN 3124
Item codeBN4E2N020
Bn4e2n02710,10
Bn4e2n02810,10
Bn4e2n02910,10
Bn4e2n03010,10
Bn4e2n03210,10
Bn4e2n03310,70
Bn4e2n03410,70
Bn4e2n03511,00
Bn4e2n03611,00
Bn4e2n03813,20
Bn4e2n04114,90
Bn4e2n04616,50
Bn4e2n05019,80
Bn4e2n05524,20
Bn4e2n06030,00

Compare with similar models

Technical data declared by the manufacturers. An empty cell means the figure is not declared.

Feature This model Hex socket, standard series, Fervi BN4E2N020 Hex socket, standard series, Fervi BN4E2N021 Hex socket, standard series, Fervi BN4E2N022 Hex socket, standard series, Fervi BN4E2N023
Brand FerviFerviFerviFervi
Connection 3/4"3/4"3/4"3/4"
Opening 20 mm21 mm22 mm23 mm
Standard DIN 3124DIN 3124DIN 3124DIN 3124
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The perfect setup for this job

Everything you need in one place, from functionality to safety.

For the job

FerviErgonomic ratchet Fervi 0439/1/2Code 0439/1/2

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

For safety