Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 38E73-4A found under Valve Control by Parker Hannifin Ltd. The National Stock Number assigned to this part is 2925010385770, and the Federal Supply Class is 2925 Engine Electrical System Components Aircraft Prime Moving. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 38E73-4A.