General
Material	Polyamide
Colour	Black
External thread	M 20
Internal thread	M 16
Shape	flat, hexagonal
Application areas	Housing, equipment, machines

The SKINDICHT® KU-M 20/16 BK reduction from Lapp is a cable gland reduction made of polyamide in black, specifically designed for use in industrial applications such as housings, devices, and machines. It serves as a transition element to enable the installation of cable glands with smaller connection threads into larger threaded holes. The construction allows for a secure and tight connection, featuring an internal thread M 16 and an external thread M 20. The flat, hexagonal shape facilitates easy installation with a suitable tool and ensures stable fixation in the device or housing.

Cable gland
This reduction is a component for installing cable glands, particularly when the existing threaded hole is larger than the required connection thread of the gland. This allows existing holes to be reused without requiring new drilling. This is especially advantageous during modernization or adaptation of existing machines and devices, where the hole geometry is already defined.

Functions and equipment in detail
The reduction is made of polyamide, a robust plastic known for its high mechanical strength and chemical resistance. The black surface provides good protection against contamination and integrates well visually in industrial environments. The hexagonal shape enables secure and precise installation using an Allen key or suitable tool. The combination of internal and external threads (M 16 / M 20) ensures a secure fit between the cable gland and the housing.

Technology explained clearly
The reduction acts as an adapter between two different thread sizes. The external thread M 20 fits into a hole with M 20, while the internal thread M 16 enables connection to a cable gland with M 16. This increases flexibility in selecting cable glands without requiring modification of the hole in the device. The choice of polyamide ensures high resistance to mechanical stress and frequent installation operations.

Compatibility and accessories
The reduction is compatible with cable glands featuring an internal thread M 16 and can be installed in holes with an external thread M 20. It is part of the SKINDICHT® product family from Lapp and can be combined with other components of this series to ensure a consistent and secure cable connection. Standard use is intended in machines, devices, and housings, with exact installation varying depending on the application and assembly.

Installation and mounting
Mounting is done by screwing the reduction into the existing hole with M 20 thread. Subsequently, the desired cable gland with M 16 thread is screwed into the internal side of the reduction. The flat, hexagonal shape allows secure fastening using an Allen key or suitable tool. Precise installation is important to ensure a tight and mechanically stable connection.

Advantages in operation
The reduction enables flexible adaptation of cable glands to existing holes, simplifying modifications or new installations. The use of polyamide ensures high durability and resistance to mechanical stress. The black surface is robust and integrates well into industrial environments. The combination of M 16 and M 20 offers broad compatibility with various cable glands and housing holes.

Protection rating
The reduction is not marked with a specific protection rating (e.g. IP). The protective function is ensured by the cable gland itself and correct installation. However, the polyamide construction offers high protection against mechanical damage and contamination.

Application areas
The reduction is used in industrial applications, particularly in machines, devices, and housings, where adaptation of cable glands to existing holes is required. It is especially useful during modernization or maintenance of existing systems where the hole geometry should not be altered.

Material and color
The polyamide material offers high strength and chemical resistance. The black color is standard and ensures good visual integration in industrial environments. The surface is smooth and resistant to contamination.

Thread
The external thread is M 20, and the internal thread is M 16. This combination enables connection between a larger hole and a smaller cable gland. The thread type is metric and conforms to common standards for industrial applications.

Shape and design
The reduction has a flat, hexagonal shape, enabling secure installation with an Allen key or suitable tool. The flat design ensures the reduction does not protrude beyond the housing surface, facilitating integration into compact assemblies.

Manufacturer and type
The manufacturer is Lapp, and the type is SKINDICHT® KU-M 20/16 BK. The manufacturer's number is 52104521. The reduction is part of the SKINDICHT® product series, known for its reliability and functionality in industrial electrical installations.