Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R5608 found under Nipple Tube by Senior Aerospace Jet Products Corp. The National Stock Number assigned to this part is 4730142025283, 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 R5608.