Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CQ3 3-4X1 1-2IN found under Coupling Hose Brass by Clemco Industries Corp. The National Stock Number assigned to this part is 4730009708318, 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 CQ3 3-4X1 1-2IN.