Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 57083 found under Cap Tube by Crane Pumps And Systems Inc. The National Stock Number assigned to this part is 4730010116003, 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 57083.