Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20A90AL found under Adapter by Ever Tite Coupling Co Inc. The National Stock Number assigned to this part is 4730013283376, 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 20A90AL.