Based on this product's specifications, here are some alternatives and similar models
Ergom N 13/H BK Polyamide Locknut PG13 Black
Summary description:
The Ergom N 13/H BK is a high-quality polyamide locknut designed for PG13 cable glands. This black, durable plastic nut provides secure fastening and vibration resistance for electrical installations. It is an essential component for ensuring reliable cable entry and protection in industrial and commercial wiring systems.