Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 250H found under Union Pipe by Crane Company. The National Stock Number assigned to this part is 4730002775501, 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 250H.