Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R1239-1 found under Manifold Output by United States Postal Service. The National Stock Number assigned to this part is 7050004249698, and the Federal Supply Class is 7050 Adp Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R1239-1.