Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1-P12609-AND-1-51B27 found under by International Paper Company. The National Stock Number assigned to this part is 3540010243050, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1-P12609-AND-1-51B27.