Why Choose the Cembre 3017973 Metric Entry Thread Reducer?
The Cembre 3017973 is a premium metric entry thread reducer designed to adapt M63 threaded enclosure entries to M40 cable glands. Manufactured from nickel-plated brass, this high-quality reducer delivers a secure, corrosion-resistant connection while allowing different metric thread sizes to be used without modifying the enclosure. It is supplied in bags of 10 pieces.
Designed for industrial electrical installations, control panels, switchgear and junction boxes, the reducer enables installers to fit smaller metric cable glands into larger threaded openings while maintaining a neat, professional and reliable installation.
The Cembre 3017973 combines precision machining with durable nickel-plated brass construction, making it an excellent choice for OEM machine builders, panel builders and electrical contractors working in demanding industrial environments.
Key Advantages
Precision M63 to M40 metric thread reducer.
Manufactured from durable nickel-plated brass.
Allows smaller cable glands to be fitted into larger threaded entries.
Corrosion-resistant finish for industrial environments.
Simple threaded installation with no enclosure modification required.
Supplied in convenient bags of 10.
Key Features
Manufacturer: Cembre.
Model: 3017973.
Metric entry thread reducer.
M63 male to M40 female thread conversion.
Nickel-plated brass construction.
Suitable for industrial cable gland installations.
Easy threaded installation.
Supplied as a pack of 10 reducers.
Reliable Cable Entry Adaptation for Industrial Installations
Metric thread reducers provide a secure solution for adapting cable gland thread sizes while preserving enclosure integrity. They eliminate the need for machining or replacing enclosures when different cable gland sizes are required.
Cembre brass cable gland accessories are widely specified throughout industrial automation, electrical distribution and OEM manufacturing thanks to their precision engineering, corrosion resistance and long-term reliability.
Typical Applications
Industrial control panels.
Switchgear assemblies.
Junction and terminal boxes.
Machine building and OEM equipment.
Power distribution installations.
Industrial cable gland adaptation.
Technical Specifications
Associated catalogue number
20436340N
Product type
Metric entry thread reducer
Thread size
M63 male × M40 female
Thread standard
Metric
Material
Nickel-plated brass
Colour
Silver
Operating temperature
-25 °C to +100 °C
Application
Cable gland thread reduction
Mounting
Threaded installation
Pack quantity
10 pieces
HS Code
74153900
Country of Manufacture
China
Frequently Asked Questions
What is the Cembre 3017973 used for?
It adapts an M63 threaded enclosure entry to accept an M40 metric cable gland.
What material is the reducer made from?
The reducer is manufactured from durable nickel-plated brass for excellent corrosion resistance.
Where is this reducer typically installed?
It is commonly used in industrial control panels, switchgear, electrical enclosures and junction boxes.
How many reducers are supplied?
The Cembre 3017973 is supplied in a bag of 10 pieces.
Is it suitable for industrial environments?
Yes. Its nickel-plated brass construction provides excellent durability and reliable performance in demanding industrial applications.
Trusted by Electrical Professionals Worldwide
Cembre cable gland accessories are trusted by electrical contractors, panel builders and OEM manufacturers for delivering secure, durable and professional cable entry solutions across industrial installations.
Associated catalogue number
20436340N
Product type
Metric entry thread reducer
Thread size
M63 male × M40 female
Thread standard
Metric
Material
Nickel-plated brass
Colour
Silver
Operating temperature
-25 °C to +100 °C
Application
Cable gland thread reduction
Mounting
Threaded installation
Pack quantity
10 pieces
HS Code
74153900
Country of Manufacture
China
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.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
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Stock lines ready to ship
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Same day dispatches
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Customers supported
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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...