Hirobo HI2521099 Replacement Collar 2 x 6 x 6 F7.3 x 0.5  [HI2521099]

Replacement collar for rotor shaft positioning

This small-scale collar is listed among Hirobo general parts as model HI2521099 with the dimension designation 2 x 6 x 6 F7.3 x 0.5. It is suitable for hobby helicopter assemblies that require a compact collar to position or retain rotating or sliding components on shafts.

Compatibility details: the listing places this item in Hirobo helicopter general parts, making it suitable for Hirobo rotorcraft parts kits and other small RC helicopter assemblies that accept the same collar dimensions. Verify the shaft diameter and clearance before installation to ensure proper fit.

Fitting guidance: check orientation and seating on the shaft, align with adjacent components, and secure using the fastener type recommended for your model. Small collars limit axial play and maintain spacing between moving components, which can help reduce wear in linkage systems.