Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 247-4992 PARTS KIT B2 found under Parts Kit Centrifuge Laboratory by Du Pont De Nemours Deutschland. The National Stock Number assigned to this part is 6545012674674, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 247-4992 PARTS KIT B2.