Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MA004663-2 found under Coupling Half Quick Disconnect by Allen Vanguard Corporation. The National Stock Number assigned to this part is 4730015348715, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MA004663-2.