Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D 474800 4802 1 2 IN ITEM 12 found under O Ring by Rockwell International Corp. The National Stock Number assigned to this part is 5331012525103, 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 D 474800 4802 1 2 IN ITEM 12.