Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 633-C-7541 ITEM 39 found under Plug Machine Thread by Aqua Chem Inc. The National Stock Number assigned to this part is 5365011858522, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 633-C-7541 ITEM 39.