Insulated Socket 21mm 1/2in Drive VDE Chrome Vanadium

£13.99 inc. VAT

21mm VDE insulated socket with 1/2in drive, made from chrome vanadium steel for fastening work on electrical panels, switchgear and similar service tasks.

  • Size 21mm
  • Drive Size 1/2in.
  • Socket Type Insulated
  • Material Chrome Vanadium

All specifications

In stock, ready to dispatch

Free UK Tracked 48, est. delivery Mon 16 – Tue 17 Nov

Royal Mail aims to deliver Tracked 48 in two to three working days.

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All delivery options
Tracked 48Free
Tracked 24£2.99
Next day courier£6.99
Click & CollectFree · WS8
International trackedfrom £13.49

Product code: CT4735 · Brand: Neilsen

About this product

A 21mm VDE insulated socket with a 1/2in drive, made from chrome vanadium steel for controlled fastening work where insulated hand tools are required. Used where access to electrical panels and switchgear calls for the correct socket size with added insulation on the tool.

Commonly used for panel work, electrical installation tasks, maintenance jobs and servicing where 21mm fixings need to be tightened or removed safely with a compatible 1/2in drive ratchet or wrench. Suitable for electricians, maintenance engineers and trade users working on switchgear, control cabinets and similar equipment, as well as anyone carrying out repair or replacement work where insulated tooling is specified.

The 21mm size gives clear fitment for matching fasteners, while the 1/2in drive suits standard hand tools already found in many tool kits and service cases. Chrome vanadium steel provides the base strength expected from a workshop socket, and the insulated outer helps make it more suitable for electrical panel tasks than a standard non-insulated socket. For repeated servicing work, having the correct insulated size close to hand helps avoid unnecessary switching between tools and keeps routine jobs more straightforward.

Insulated socket specifications

  • Size: 21mm socket for matching nuts and bolt heads.
  • Drive: 1/2in square drive for use with compatible ratchets and drive tools.
  • Insulation: VDE insulated construction for work where insulated tools are required.
  • Material: Made from chrome vanadium steel.
  • Application: Useful for fastening work on electrical panels, switchgear and similar maintenance jobs.

A practical choice for regular panel maintenance and electrical fastening work.

Specifications

Product codeCT4735
BrandNeilsen
Finish

Chrome

Type

Socket Set

Size

21mm

Features

Injection insulated

Drive Size

1/2in.

Socket Type

Insulated

Material

Chrome Vanadium

Set or Single Item

Single Item

System of Measurement

Metric

Tools Included

Sockets

Standards

VDE

Barcode (EAN) 5055282047354

Delivery & returns

UK delivery

  • Royal Mail Tracked 48Aims to deliver in two to three working daysFREE
  • Royal Mail Tracked 24Next working day delivery aim£2.99
  • Next day courierNext working day aim, where available£6.99
  • Click & Collect, Brownhills WS8Usually ready next working dayFREE
  • International trackedOutside the EU and USA (paused for now)from £13.49

Order by 8am UK time, Mon–Fri excluding bank holidays in England and Wales, and we usually send it the same day; otherwise, the next working day. Delivery aims count from when we send it.

Returns

  • 30 days to change your mindTell us within 30 days of delivery, then send it back within 14 days. You pay return postage
  • Faulty or wrong? We pay return costsYour legal rights continue after 30 days

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