Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HS1089-3A25600 found under Structural Section Special Shaped by Boeing Company The. The National Stock Number assigned to this part is 9540012659077, and the Federal Supply Class is 9540 Structural Shapes Nonferrous Base Metal. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HS1089-3A25600.