The Star Mfg 2A-39335 Burner Orifice is a gas metering component used within compatible commercial cooking equipment burner assemblies. Its #53 opening regulates the amount of fuel entering the burner, while the 3/8"-27 threaded connection provides the specified fit within the gas assembly. With a listed 1/2" height, the component matches the stated dimensions for installation. Positi... https://partsfe.com/orifice-53-for-star-part-2a-39335