Replacement Cross Member with 5mm Ball Joint M2 x 20 for RC Helicopters - Hirobo HI2511013  [HI2511013]

Control link cross member for small rotorcraft

This Hirobo cross member is made for RC helicopter linkage assemblies where a 5mm ball must be coupled to an M2 x 20 threaded fastener. It serves as a compact connector between pushrods and ball studs to keep control link angles consistent.

Fitting normally involves seating the 5mm ball in the link, inserting the M2 x 20 fastener through the cross member, and tightening into the model's threaded boss. Always confirm unrestricted ball movement before sealing up the assembly to prevent control binding during rotor operation.

When adjusting controls, remember this part can change the effective linkage geometry and reveal play at the ball joint; re-check neutral positions and endpoints with servos powered to ensure predictable handling. The component is intended only for model helicopters and similar small-scale rotorcraft hardware.