Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number G30-C4E21C-A12D32L found under Pump Rotary by Barnes John S Corp. The National Stock Number assigned to this part is 4320012734732, and the Federal Supply Class is 4320 Power And Hand Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like G30-C4E21C-A12D32L.