Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4W12545-155A found under Panel Assembly Fair by Triumph Airborne Structures Llc. The National Stock Number assigned to this part is 1560003510179, 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 4W12545-155A.