HD Coupling 4mm to 1/4

The Radio Active HD Coupling 4mm to 1/4 (I-RMA5742) provides a straightforward way to join a 4mm shaft to a 1/4 inch shaft in RC models and light engineering projects. With a heavy-duty format, it offers a robust solution for adapting components that use different shaft sizes.

This practical coupler is useful for repairs, upgrades and scratch builds where consistent alignment between shafts is required. Please ensure the dimensions and installation method suit your application.

Key Points

• Connects 4mm to 1/4 inch shafts
• Heavy-duty coupling design
• Brand: Radio Active; Part number: I-RMA5742
• Helpful for RC powertrains and workshop setups
• Supports adapting differing shaft sizes in compact spaces

Suggested Compatibility

• RC boats, cars and aircraft drivetrains
• General hobby engineering, robotics and maker projects