Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ITEM 11-3 4 IN found under Packing Preformed by Mckean Machinery Sales Inc. The National Stock Number assigned to this part is 5330013120098, 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 ITEM 11-3 4 IN.