The Rittal SZ4157.000 U Nut is a reliable enclosure assembly accessory designed for secure mounting of punched rails, punched sections and chassis components within Rittal enclosure systems. As part of the Rittal system accessories range, it provides a simple and effective fastening solution for internal cabinet construction.
This U nut is designed with an M5 thread and allows components to be mounted onto compatible Rittal support systems, including punched rails and mounting chassis. Its compact design helps simplify enclosure assembly while maintaining a strong and dependable mechanical connection.
The SZ4157.000 is supplied in a pack of 20 pieces and is suitable for professional electrical cabinet builders, panel manufacturers and industrial automation installations requiring flexible internal mounting solutions.
Key Advantages
Reliable M5 U nut fastening solution for Rittal enclosure systems.
Designed for mounting punched rails, punched sections and chassis components.
Pack quantity of 20 pieces for convenient installation and maintenance.
Provides flexible positioning of internal enclosure components.
Supports efficient and secure cabinet assembly.
Genuine Rittal accessory engineered for industrial applications.
Key Features
Rittal SZ system accessory series.
M5 threaded U nut design.
Suitable for punched rail 23 × 23 mm.
Suitable for mounting chassis 23 × 73 mm.
Suitable for mounting chassis 45 × 88 mm.
Suitable for system chassis 23 × 73 mm.
Supplied as a pack of 20 pieces.
Reliable Internal Mounting for Electrical Enclosures
The Rittal SZ4157.000 U Nut provides a dependable method for attaching internal components within electrical enclosures. It enables efficient installation of support rails and mounting accessories, helping create organised and serviceable cabinet layouts.
Designed for use with Rittal enclosure infrastructure, this accessory supports professional panel building applications where accurate positioning and secure fastening are essential for long-term reliability.
Typical Applications
Industrial electrical cabinets and control enclosures.
Automation and machine-building panels.
Switchgear and distribution assemblies.
Internal mounting of punched rails and chassis systems.
Electrical panel manufacturing and modification projects.
The SZ4157.000 is a U nut used for mounting punched rails, punched sections and chassis components inside Rittal enclosure systems.
What thread size does the SZ4157.000 have?
The Rittal SZ4157.000 features an M5 thread.
How many pieces are included in one pack?
The SZ4157.000 is supplied as a pack containing 20 pieces.
Which Rittal components can this U nut be used with?
The U nut is suitable for punched rails, mounting chassis and compatible Rittal internal mounting systems.
Is the SZ4157.000 suitable for industrial cabinet construction?
Yes, the SZ4157.000 is designed for professional enclosure assembly and industrial control cabinet applications.
Trusted by Electrical Panel Builders Worldwide
Rittal system accessories are trusted by electrical engineers and panel builders worldwide for reliable enclosure assembly, flexible internal mounting and long-lasting industrial performance.
Manufacturer
Rittal
Series
SZ System Accessories
Model
SZ4157.000
Article number
4157000
Product type
U nut / sliding nut
Thread
M5
Packaging unit
20 pieces
Suitable installation options
Punched rails and mounting chassis
Weight
approx. 0.34 kg net
EAN
4028177092822
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
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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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...