Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RV-40 PART NUMBER 49 found under Switch Pressure by Golden Arrow Marine Ltd. The National Stock Number assigned to this part is 5930013496312, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RV-40 PART NUMBER 49.