Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number U11 63 555S found under Clamp Hose by V I J Corporation. The National Stock Number assigned to this part is 4730006840902, 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 U11 63 555S.