Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL520-12743 found under Bracket Structural Component Air by Boeing Aircraft. The National Stock Number assigned to this part is 1560016606296, 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 PL520-12743.