Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ASTM-D1974 found under Box Shipping by American Society For Testing And. The National Stock Number assigned to this part is 8115001185769, and the Federal Supply Class is 8115 Boxes Cartons And Crates. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ASTM-D1974.