Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5197-750 found under Ring Expansion Hose by Flagg Stanley G And Co Inc. The National Stock Number assigned to this part is 4730015065320, 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 5197-750.