Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KB427-1 found under Duct Assembly by Drs Consolidated Controls Inc. The National Stock Number assigned to this part is 5999015678147, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KB427-1.