Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 037-0019 found under Tee Pipe To Boss by Actus Manufacturing Inc. The National Stock Number assigned to this part is 4730012334996, 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 037-0019.