Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 7288 found under Disk Valve by Graybar International Inc. The National Stock Number assigned to this part is 4820015600394, 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 7288.