Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 742724 found under Housing Mechanical by Hamilton Sundstrand Corporation. The National Stock Number assigned to this part is 3040012403570, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 742724.