Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R4497-02 found under Standoff Threaded S by Harwin Plc. The National Stock Number assigned to this part is 5340997512448, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R4497-02.