Sonex Aircraft Hardware

Inclusion of Aircraft Spruce & Specialty Co. hardware kits is not a guarantee that all hardware required to finish your aircraft will be provided. Some parts & materials needed can be sourced from local, non-aviation vendors and are not included in our hardware kits. Your specific hardware needs will vary based-on configuration options, equipment selections, personal preference and your own custom touches to the aircraft. The hardware kits are not a guarantee that Sonex has or will provide every piece of hardware each builder needs, they are a convenience intended to put the bulk of hardware in each builder's hands.

Tolerance Stacking:
Tolerance stacking is the impact the acceptable tolerance range of each part has on the total thickness of the stacked parts. Due to tolerance stacking, there will always be random instances of bolt lengths that will need to be changed in virtually every builder's kit. Learn more about this in the KITPLANES magazine article "Length Matters" by retired Sonex technical support manager Kerry Fores. No kit or hardware manufacturer can completely account for the effects of tolerance stacking when it occurs, and it is the builder's responsibility to source the proper fasteners when tolerance stacking occurs.