The Toyotomi 20474058 is a genuine Nut A for NS2700, NS1750, NS2800. Genuine fastening nut used on the Toyotomi NS-series kerosene heaters. Order the correct nut rather than substituting hardware from the shelf.
This is an OEM Toyotomi part, so it fits and performs the way the original did. Confirm your heater model before ordering; the model is on the rating label on the unit. If you are not sure which part you need, Rural Energy support can check it against your model and serial number.
Rural Energy is a Toyotomi distributor and keeps NS-series heater parts in stock for fast shipping to dealers and homeowners.