Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 772940-2 found under Muffler Duct by Hamilton Sundstrand Corporation. The National Stock Number assigned to this part is 1560011758969, 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 772940-2.