Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1159CSM20031 1 found under Fitting Control Sur by Gulfstream Aerospace Corp. The National Stock Number assigned to this part is 4730012371971, 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 1159CSM20031 1.