Why Choose the Cembre 3017858 PG Entry Thread Reducer?
The Cembre 3017858 is a precision-engineered PG entry thread reducer designed to adapt PG21 threaded enclosure entries to PG16 cable glands. Manufactured from premium nickel-plated brass, this reducer provides a durable, corrosion-resistant solution for adapting cable gland thread sizes while maintaining the integrity and protection of industrial electrical enclosures.
Designed for industrial control panels, switchgear, junction boxes and OEM machinery, the reducer enables installers to fit smaller PG cable glands into larger threaded enclosure openings without modifying the enclosure. Precision-machined threads ensure secure installation, excellent mechanical strength and dependable long-term performance in demanding industrial environments.
Supplied in bags of 50 pieces, the Cembre 3017858 is an ideal solution for electrical contractors, panel builders and machine manufacturers requiring reliable cable gland accessories for professional electrical installations.
Key Advantages
Precision PG21 to PG16 thread reducer.
Manufactured from durable nickel-plated brass.
Allows smaller PG cable glands to be installed into larger threaded entries.
Excellent corrosion resistance for demanding industrial environments.
Simple threaded installation without enclosure modification.
Supplied in convenient bags of 50 pieces.
Key Features
Manufacturer: Cembre.
Model: 3017858.
Manufacturer part number: 20422116N.
PG21 male to PG16 female thread conversion.
Nickel-plated brass construction.
Silver corrosion-resistant finish.
Designed for PG cable gland installations.
Supplied as a pack of 50 reducers.
Reliable Cable Entry Adaptation for Industrial Installations
PG thread reducers provide a secure and dependable method of adapting cable gland thread sizes while maintaining enclosure protection and cable entry integrity. They eliminate unnecessary enclosure modifications and help deliver neat, professional electrical installations.
Cembre brass cable gland accessories are trusted by panel builders, OEM manufacturers and industrial electricians worldwide for their precision engineering, corrosion-resistant construction and dependable long-term performance.
Typical Applications
Industrial control panels.
Electrical switchgear.
Machine building and OEM equipment.
Junction and terminal boxes.
Power distribution systems.
Industrial cable gland adaptation.
Technical Specifications
Manufacturer part number
20422116N
Product type
PG entry thread reducer
Thread size
PG21 male × PG16 female
Thread standard
PG (DIN 40430)
Material
Nickel-plated brass
Colour
Silver
Operating temperature
-25 °C to +100 °C
Thread length
7 mm
Width
10 mm
Application
Cable gland thread reduction
Mounting
Threaded installation
Pack quantity
50 pieces
HS Code
74153900
Country of Manufacture
India
Frequently Asked Questions
What is the Cembre 3017858 used for?
It adapts a PG21 threaded enclosure entry to accept a PG16 cable gland.
What material is the reducer manufactured from?
The reducer is manufactured from nickel-plated brass, providing excellent corrosion resistance and mechanical durability.
Where is this reducer typically installed?
It is commonly installed in industrial control panels, switchgear, electrical enclosures, machinery and junction boxes.
How many reducers are supplied?
The Cembre 3017858 is supplied in a bag of 50 pieces.
Is it suitable for industrial environments?
Yes. Its nickel-plated brass construction and operating temperature range of -25 °C to +100 °C make it suitable for demanding industrial applications.
Trusted by Electrical Professionals Worldwide
Cembre cable gland accessories are trusted by electrical contractors, panel builders and OEM manufacturers for delivering reliable, durable and professional cable entry solutions across industrial installations.
Manufacturer part number
20422116N
Product type
PG entry thread reducer
Thread size
PG21 male × PG16 female
Thread standard
PG (DIN 40430)
Material
Nickel-plated brass
Colour
Silver
Operating temperature
-25 °C to +100 °C
Thread length
7 mm
Width
10 mm
Application
Cable gland thread reduction
Mounting
Threaded installation
Pack quantity
50 pieces
HS Code
74153900
Country of Manufacture
India
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
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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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.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...