General
PG size	11
Wrench width	24 mm
Colour	Silver grey
RAL colour	7001
Material	Polyamide
Halogen free

The GMP-GL11 counter nut from Lapp is a component specifically developed for use with SKINTOP® cable glands. It serves as a mounting aid for the secure fastening of cable glands in drilled holes without threads, ensuring a stable and slip-resistant connection. The product is made of polyamide, a thermoplastic material known for its high strength and resistance to mechanical stress. The counter nut is halogen-free, making it suitable for applications in areas with increased fire safety requirements.

Counter nut
The counter nut is used in conjunction with SKINTOP® cable glands to fix them in non-threaded holes. It prevents the cable gland from being screwed into the wall by acting as a backing. The wrench size is 24 mm, allowing use with an open-ended wrench. The surface is designed to avoid scratching the enclosure, which is particularly beneficial for sensitive or visually demanding installations.

Functions and equipment in detail
The counter nut is made of glass-fibre-reinforced polyamide, ensuring high mechanical stability and durability. The glass fibre reinforcement increases strength and resistance to breakage and deformation under load. The colour is silver grey, corresponding to RAL 7001, enabling visual harmonization with other components in the electrical installation system. The halogen-free composition reduces the formation of toxic gases in case of fire, thereby increasing safety during operation.

Technology explained simply
The counter nut is inserted into the hole where the cable gland is to be mounted. It is tightened using an open-ended wrench, with the special shape of the outer surface preventing damage to the enclosure. The connection between the counter nut and the cable gland is established via the gland's thread, creating a secure and sealing connection. The use of polyamide ensures good chemical resistance against many industrial chemicals, making the counter nut suitable for various environments.

Compatibility and accessories
The GMP-GL11 counter nut is specifically designed for SKINTOP® cable glands in PG 11 format. It is used in conjunction with these glands to enable secure mounting in non-threaded holes. Compatibility is limited to PG 11 size, with the wrench size of 24 mm matched to the required tools.

Mounting and installation
Installation involves inserting the counter nut into the hole and then tightening it with an open-ended wrench. The counter nut is positioned to cover the inner side of the hole and act as a backing for the cable gland. The cable gland is then screwed in from the other side, with its thread engaging the counter nut. Installation requires no additional tools or aids, except for the wrench with the appropriate wrench size.

Advantages in operation
The use of the GMP-GL11 counter nut provides the advantage of a secure and sealing connection without damaging the enclosure. The glass-fibre-reinforced polyamide structure ensures high mechanical stability, increasing the lifespan of the installation. The halogen-free composition improves fire safety, which is particularly important in industrial or public facilities. The silver grey colour allows for visual integration into existing installations.