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3005221 Cembre 1143M16N METRIC LOCKNUT WITH COLLAR

3005221 Cembre 1143M16N METRIC LOCKNUT WITH COLLAR

Cembre 3005221 M20 x 1.5 polyamide locknut with integrated collar in light grey RAL7035 for securing cable glands and threaded electrical accessories.

SKU: 3005221Alt SKU: 1143M16NMPN: 3005221
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Why Choose the Cembre 3005221 Polyamide Locknut with Collar?

The Cembre 3005221 is a high-quality M20 polyamide locknut with integrated collar, designed to provide secure fastening for cable glands and threaded electrical accessories in industrial and commercial installations. Manufactured by Cembre, this locknut delivers excellent mechanical strength, corrosion resistance and long-term reliability for electrical enclosure and control panel applications.

Manufactured from durable PA6.6 polyamide in a light grey (RAL 7035) finish, the locknut is designed for M20 × 1.5 metric threads. The integrated collar helps distribute clamping pressure evenly, protecting enclosure surfaces while ensuring a secure installation.

Supplied in a convenient pack of 100, the Cembre 3005221 is an excellent choice for OEM machine builders, panel manufacturers, electrical contractors and maintenance engineers requiring dependable cable gland accessories.

Key Advantages

  • High-quality M20 metric locknut with integrated collar.
  • Manufactured from durable PA6.6 polyamide.
  • Light grey RAL 7035 finish.
  • Excellent resistance to corrosion and industrial environments.
  • Designed for secure mounting of cable glands and threaded fittings.
  • Supplied in economical packs of 100.

Key Features

  • Manufacturer: Cembre.
  • Manufacturer code: 1143.M20.
  • Metric thread: M20 × 1.5.
  • Material: Polyamide (PA6.6).
  • Colour: Light Grey (RAL 7035).
  • Integrated collar for improved load distribution.
  • Suitable for metric cable glands and threaded accessories.
  • Pack quantity: 100 pieces.

Reliable Fastening for Electrical Installations

Locknuts are an essential component of professional cable gland installations, providing secure retention of threaded cable glands in electrical enclosures, junction boxes and industrial control panels while maintaining long-term mechanical stability.

Cembre cable management accessories are widely specified by panel builders, automation engineers and electrical contractors thanks to their robust construction, excellent dimensional accuracy and compatibility with professional metric cable gland systems.

Typical Applications

  • Industrial control panels.
  • Electrical switchboards.
  • Machine building.
  • Automation equipment.
  • Junction boxes and enclosures.
  • Cable gland installations.

Technical Specifications

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Colour Light Grey
Material Nylon (PA 6.6)
Thread Size M20
Device Type Locknut
Manufacturer code 1143.M20
Product type Polyamide locknut with collar
Thread size M20 × 1.5
Thread type Metric
Material PA6.6 Polyamide
Colour Light Grey (RAL 7035)
Overall diameter 29 mm
Across flats 27 mm
Height 6 mm
Operating temperature -20°C to +90°C (dynamic)
Pack size 100 pieces
Mounting Panel and enclosure installation
HS Code 39269097
Country of Manufacture Italy

Frequently Asked Questions

What is the Cembre 3005221 used for?

It is used to securely fasten M20 cable glands and threaded accessories to electrical enclosures and control panels.

What thread size does this locknut support?

The locknut is designed for M20 × 1.5 metric threads.

What material is the locknut manufactured from?

It is manufactured from high-quality PA6.6 polyamide for strength and long service life.

How many locknuts are supplied?

The product is supplied in a pack of 100.

Where is this locknut typically installed?

It is commonly installed in electrical enclosures, machinery, switchgear and industrial control panels using M20 cable glands.

Trusted by Electrical Professionals Worldwide

Cembre cable management accessories are trusted by panel builders, OEM manufacturers and electrical contractors worldwide for delivering secure, reliable and professional electrical installations.

● Service Agreements

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Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

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 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

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