Dubro 4-40 Split Coupling Sleeve RC Aircraft Accessory - DUB659

The Dubro 659 Split Coupling Sleeve is a 4-40 threaded RC aircraft accessory designed for connecting and securing pushrods and control linkages in RC aircraft builds. Sold under style code DUB659, this small but essential piece of hardware allows two threaded rods to be joined end-to-end within a single sleeve, making it a practical solution for linkage adjustments and assembly work. If you're building or setting up the control surfaces on a fixed-wing RC aircraft, getting reliable pushrod connections is critical, and this Dubro coupling sleeve is a straightforward way to achieve that.

Key Features

• 4-40 thread size suits standard RC aircraft control linkage hardware
• Split sleeve design allows the coupling to be locked onto threaded rods for a secure connection
• Compatible with 4-40 threaded pushrods commonly used in RC aircraft control systems
• Compact and lightweight, adding negligible weight to the aircraft
• Dubro hardware is widely used across scratch builds, ARF kits, and sport aircraft repairs

What's Included

• Dubro 659 4-40 Split Coupling Sleeve

What You Need

• 4-40 threaded pushrods or control rods (sold separately)
• RC aircraft requiring pushrod linkage connections
• Appropriate tools for linkage installation (e.g. hex driver or pliers)