Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FV-20-193 found under Packing Nut by Automatic Switch Company. The National Stock Number assigned to this part is 4730010563123, 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 FV-20-193.