Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BA91-140 found under Tank Assembly Fabric Collapsible by Avon Engineered Fabrications Inc. The National Stock Number assigned to this part is 5430013594943, and the Federal Supply Class is 5430 Storage Tanks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BA91-140.