Industrial Thermowell, Internal Thread Size 1/4 in NPT, Stem Length 5.75 in, Process Connection 1/2 in NPT, Insertion Length 4 in, Material 304 Stainless Steel, Bore Dia. 0.25 in Features Item: Threaded Thermowell Internal Thread Size: 1/4 in NPT Stem Length: 4 in Process Connection: 1/4 in MNPT Insertion Length: 4 in Material: Stainless Steel Bore Dia.: 0.25 in For Thermometer Thread Type: NPT Includes Cap and Chain: No Shank Type: Straight For Stem Length: 4 in For Stem Diameter: 1/2 in Thread Size: 1/4 in Maximum Operating Temperature: 1,200 Degrees F/648 Degrees C Includes Lagging: Yes For Thermometer Thread Connection: 1/4 in NPT NSF Rated: No For Thermometer Thread Size: 1/4 in Thread Gender: Male Thermowell Type: Threaded Application: Boilers, Building Automation, Chemical Industry or Process Technology, Chill Water Lines Thread Type: NPT Maximum Operating Pressure: 3,700 psi Food Safe: No