Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS 04 050 found under Pneumatic Muffler Exhaust Intake by Solberg Mfg Inc. The National Stock Number assigned to this part is 4730016643741, 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 FS 04 050.