Based on this product's specifications, here are some alternatives and similar models
Ergom M50 Polyamide Locknut Black
Summary description:
The Ergom M50 polyamide locknut is a durable fastening component designed for secure cable gland installation. Made from high-quality black polyamide, it provides excellent mechanical strength and resistance to environmental factors. This M50 size nut is ideal for industrial electrical applications, ensuring a reliable and tight connection in various enclosures and junction boxes.