Based on this product's specifications, here are some alternatives and similar models
Lapp M20x1.5 Brass Locknut 880.120.0
Summary description:
The Lapp 880.120.0 is a high-quality brass locknut designed for secure cable gland fastening. Featuring an M20x1.5 metric thread, this durable component ensures reliable mechanical stability in industrial electrical installations. Its robust brass construction provides excellent corrosion resistance and longevity, making it suitable for various professional wiring and connectivity applications.