Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3642 found under Bottle And Cap Assembly by Townsend Products Inc. The National Stock Number assigned to this part is 3610004578704, and the Federal Supply Class is 3610 Printing Duplicating And Bookbinding Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3642.