Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D305308 FIND NO 78 found under Nipple Tube by Control Flow Inc. The National Stock Number assigned to this part is 4730003345550, 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 D305308 FIND NO 78.