Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 68A4D216 found under Valve Safety Relief by Navair And Navsea Managed. The National Stock Number assigned to this part is 4820004370183, 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 68A4D216.