Hirobo HI2521055 3.1 x 6 x 10 Collar for RC Helicopters  [HI2521055]

Axial locating sleeve for small rotor assemblies

This collar serves as an RC-scale locating sleeve for helicopter general parts where compact axial restraint is required. The 3.1 x 6 x 10 inscription identifies the nominal size used to match shaft diameters and spacing needs in light helicopter components.

To fit, slide the collar onto the shaft or post to establish the required stop position, then secure surrounding hardware or set screws per the original layout. It operates as a spacer and stop inside linkage stacks, blade grips, and similar sub-assemblies where precise clearance is important.

During setup and service, using collars like this preserves repeatable spacing and reduces play after component swaps. Choose this part when you need to recover original alignment or stabilise control link clearances.