Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WTJ 03 19 found under Fitting Lubrication by Vestil Manufacturing Corp. The National Stock Number assigned to this part is 4730016665447, 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 WTJ 03 19.