Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 634B4-SS found under Cap Quick Disconnec by Dover Resources Inc. The National Stock Number assigned to this part is 4730013466306, 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 634B4-SS.