Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number UU-S-625 found under Stencilboard by Federal Specifications. The National Stock Number assigned to this part is 9310000454388, and the Federal Supply Class is 9310 Paper And Paperboard. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like UU-S-625.