Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 44MWSR4K8 found under Pump Feed Boiler by Ames Iron Works. The National Stock Number assigned to this part is 4320000362765, 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 44MWSR4K8.