Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 39278 40476 2 found under Cover Protective Dust And Moistu by Aai Corporation. The National Stock Number assigned to this part is 5340016672839, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 39278 40476 2.