Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M5 3-8-437 found under Mandrel Roller Tube Expander by Foster Wheeler North America Corp. The National Stock Number assigned to this part is 3456006403149, and the Federal Supply Class is 3456 Cutting And Forming Tools For Secondary Metalworking Machinery. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M5 3-8-437.