Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QD003 found under Coupling Half Quick Disconnect by Aircraft Spruce And Specialty Co. The National Stock Number assigned to this part is 4730015400425, 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 QD003.