Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EY180YOK found under Yoke Hydraulic Motor Pump by Isometrics Inc. The National Stock Number assigned to this part is 4320011839028, 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 EY180YOK.