This hexagonal locknut is equipped with a special collar, which prevents the screw wrench from slipping. The plastic locknut has been glass fibre-reinforced for maximum mechanical stability. The supporting surface for spanner means scratches on the housing are avoided. SKINTOP GMP-GL locknuts are UL approved in connection with a UL approved SKINTOP cable gland. Application: For locking SKINTOP® cable glands in bore-holes without thread. * PA Plastic locknut, glass-fibre reinforced with coil * Colour: Black (RAL 9005) * Material: Polyamide, glass fibre reinforced * Specification: M 40 * Temperature range: -20°C to +100°C * Type: SKINTOP® GMP-GL-M 40 x 1.5