Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RB9753-4B2 found under Bus Conductor by R And B Electronics Inc. The National Stock Number assigned to this part is 6150010253194, and the Federal Supply Class is 6150 Miscellaneous Electric Power And Distribution Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RB9753-4B2.