Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ASTM D41 found under Asphalt Petroleum by American Society For Testing And. The National Stock Number assigned to this part is 5610001714722, and the Federal Supply Class is 5610 Mineral Construction Materials Bulk. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ASTM D41.