Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 310-0003 found under Shaft Assembly Keye by Summer Equipment Ltd. The National Stock Number assigned to this part is 4320012073612, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 310-0003.