Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AFG-4189 found under Pump Reciprocating by G C S Inc. The National Stock Number assigned to this part is 4320010631897, 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 AFG-4189.