Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 659 12023 15 found under Support Structural Component Air by Boeing Aircraft. The National Stock Number assigned to this part is 1560015255761, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 659 12023 15.