VAT:

Lock Nuts

Shop conduit lock nuts for securing threaded conduit fittings through adaptable boxes, enclosures and electrical accessories. Available in a range of common conduit sizes, these compact fittings help provide a secure and mechanically stable connection in compatible metal conduit installations.

Showing all 4 results

Cobra BR/LN/63 63mm Brass Lock Nut – Pack of 1

3 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: BR/LN/63
£3.38

Cobra BR/LN/75 75mm Brass Lock Nut – Pack of 1

10 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: BR/LN/75
£3.96
Deligo LN20 20mm Locknut

Deligo | LN20 | 20mm Locknut | Zinc Plated

Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
Read More
SKU: LN20
£0.15
Deligo LN25 25mm Locknut

Deligo | LN25 | 25mm Locknut | Zinc Plated

Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
Read More
SKU: LN25
£0.25

Showing all 4 results

Lock Nuts for Electrical Conduit Installations

Lock nuts are used to secure threaded conduit fittings after they have been passed through the entry of an enclosure, adaptable box or electrical accessory. The lock nut is tightened onto the exposed thread, helping hold the fitting firmly in place and reducing unwanted movement.
Our range includes conduit lock nuts in various sizes for use with compatible threaded fittings. Options may include 20mm, 25mm and other standard conduit sizes, depending on current availability.

Choosing the Correct Conduit Lock Nut

Select the lock nut according to the nominal size and thread type of the conduit fitting being installed. The lock nut and fitting must be compatible to provide a secure connection.
Key points to check include:

  • Nominal conduit fitting size
  • Thread type and compatibility
  • Lock nut material and finish
  • Suitability for the enclosure or accessory
  • Applicable conduit system standards

Common Applications

Conduit lock nuts are commonly used for securing threaded fittings into:

  • Metal adaptable boxes
  • Conduit boxes
  • Electrical enclosures
  • Distribution equipment
  • Control panels
  • Compatible electrical accessories

Always check the dimensions and thread compatibility of the lock nut and conduit fitting before installation.