Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17B18138 found under Fitting Assembly Ho by Air Cruisers Company Llc. The National Stock Number assigned to this part is 4730004806215, 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 17B18138.