Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X333386 found under Cock Drain by Young Touchstone Company. The National Stock Number assigned to this part is 4820002752227, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like X333386.