Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 19-004-1251 found under Clamp Hose by Nato Stock Number Assigned By An. The National Stock Number assigned to this part is 4730011463111, 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 19-004-1251.