Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MS243911 found under Nipple Blind Tube by Singer Co The. The National Stock Number assigned to this part is 4730003859514, 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 MS243911.