Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST8239-5 found under Head Machined Gener by Servo Products Co. The National Stock Number assigned to this part is 1620003721103, and the Federal Supply Class is 1620 Aircraft Landing Gear Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ST8239-5.