Hirobo HI0412132 Sceadu SD collective pitch bolt for RC helicopter rotor linkage  [HI0412132]

Collective pitch bolt for Sceadu SD

This RC-scale component is a collective pitch bolt specified by the manufacturer model HI0412132 and intended for use on Sceadu SD series helicopters. The description focuses on its role as a securing element in the collective pitch linkage rather than as a general fastener.

The bolt functions as part of the collective pitch system, providing a fixed pivot point or connection for linkage assemblies that control rotor blade pitch. When replacing or servicing this bolt, verify alignment of linkages and free movement of the collective mechanism before flight to avoid binding or asymmetry.

Installation notes: install by hand first to confirm correct threading and alignment, then tighten incrementally until the linkage is held without play while maintaining smooth travel. Avoid over-tightening and inspect surrounding parts such as link rods and ball links for wear at the same time. This item is described only as an RC accessory, not for any full-scale aircraft use.