Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RY 166400 ITEM 8 9 found under Packing Material by Curtiss Wright Corp. The National Stock Number assigned to this part is 5330013591535, and the Federal Supply Class is 5330 Packing And Gasket Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RY 166400 ITEM 8 9.