Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RC40-6X6 found under Ventilator Air Circulating by Aeronca Inc. The National Stock Number assigned to this part is 2040011013872, and the Federal Supply Class is 2040 Marine Hardware And Hull Items. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RC40-6X6.