Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ANSI A208.1 found under Building Board Hard Pressed Vege by American National Standards Inst. The National Stock Number assigned to this part is 5640000121848, and the Federal Supply Class is 5640 Wallboard Building Paper And Thermal Insulation Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ANSI A208.1.