Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 23003959 found under Puller Bearing And Spacer by Rolls Royce Corp. The National Stock Number assigned to this part is 5120011246122, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 23003959.