Description Warranty Information The BAC bimetallic thermometer features a 90° back angle, rear threaded connection design. These thermometers, with 304 stainless steel wetted parts, are rugged and commonly used in industrial, pulp and paper, food and beverage processing, HVAC, and OEM applications. The lens material is acrylic and the standard stem diameter is .25. The standard threaded connection is 1/2-14 NPT, Model BAC, Bimetallic Thermometer, 3" (75mm), Center Back Mount, 4" Stem, 25 - 125 °F/CSpecification Sheet This product comes with a 1 year Warranty