Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SSS298 found under Shingle Organic Fiber Asphalt by Federal Specifications. The National Stock Number assigned to this part is 5650000794870, and the Federal Supply Class is 5650 Roofing And Siding Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SSS298.