Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9003D57-1 found under Shaft Generator by Sundstrand International Corporation. The National Stock Number assigned to this part is 3040010036861, 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 9003D57-1.