Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2019BE-03500-70 found under Hose Connection Assemblyairsal by Novaflex Hose. The National Stock Number assigned to this part is 4730016974961, 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 2019BE-03500-70.