4-Blade Brass Kort Propellers – focused thrust, smooth running, high durability

4-blade Kort propellers are engineered for use in Kort nozzles. The nozzle concentrates the flow while the 4-blade geometry delivers high bollard-pull with a smooth running characteristic. Brass ensures robustness, dimensional accuracy and a scale-accurate look – perfect for tugs, tankers, fishing and work vessels that require strong thrust at low speeds.

Advantages

• Maximum thrust in the nozzle

• Smooth running with reduced vibration

• Accurate fit for tight ducts

• Corrosion-resistant brass, scale appearance

• Better maneuvering at low speeds and under load

Technical features

• Material: brass

• 4-blade for thrust & stability in nozzle setups

• Diameters: wide range available

• Threads: M3, M4, M5

• Rotation: right-hand standard, left-hand available

• Use: optimized for Kort nozzles

Buying Guide

1. Choose vessel type: tug, tanker, workboat

2. Match diameter to nozzle ID with safe clearance

3. Adapt pitch to motor KV & current draw

4. Verify thread & shaft fit

5. Use counter-rotating props in twin setups

Conclusion

4-blade brass Kort propellers deliver maximum thrust, smooth handling, and long-term stability. With the right diameter, pitch, thread, and rotation, they unlock the full performance of your Kort nozzle system – perfect for demanding workboat and tug models.