Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AR5 4.21 14AZ 6F 1 1400SER found under C0ver Actuator by Rotork Controls Ltd. The National Stock Number assigned to this part is 3010014524792, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AR5 4.21 14AZ 6F 1 1400SER.