Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 17-0420 found under Adapter Straight Tube To Hose by Gas Tech Inc. The National Stock Number assigned to this part is 4730012640653, 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 17-0420.