König & Meyer reduceerschroefdraad 21900-000-29 verzinkt M25 naar M20

Electricians and installers working with metric conduit systems use this reducing thread to connect an M25 male thread to an M20 female thread. It is made of galvanized steel and suits cable glands and electrical conduit installations where a size transition is required.

Key specifications

• External thread: M25
• Internal thread: M20
• Material: Steel
• Surface finish: Galvanized (zinc-plated)
• Overall length: 25 mm
• Wrench size: 29 mm
• Temperature range: -40°C to +100°C
• Standard compliance: DIN EN 60423

Why choose it

The galvanized coating provides high corrosion resistance, making it suitable for demanding environments. Its compact design allows easy installation in tight spaces, and the metric threads ensure a secure fit with standard conduit components.

Ideal use cases

• Adapting cable glands from M25 to M20
• Reducing conduit entries in electrical enclosures
• Creating size transitions in industrial wiring systems

Good to know

This reducer is part of the König & Meyer 21900 series and is identified by model number 21900-000-29. It is designed for metric threads and is not suitable for PG or NPT systems.