Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EG508 found under Cardboard by Bureau Of Engraving And Printing. The National Stock Number assigned to this part is 9310009881013, 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 EG508.