Image may not reflect selected features Parker PGI Thermowell, 1/2in NPT x 1/2in NPT x 2U SKU: 21A020T31A00ACC Please Login to See Price Quantity discounts available QuantityPrice Quantity -+ Description Texas Thermowell 21 Series, 1/2" NPT Process and 1/2" NPT Instrument Connections. 2” U-Length with 0.260 Internal Bore. Details 304 Stainless Steel straight shank with threaded mounting style. 0.0 lag length, 0.500 tip diameter and 0.500 root diameter. DescriptionDetails Back Texas Thermowell 21 Series, 1/2" NPT Process and 1/2" NPT Instrument Connections. 2” U-Length with 0.260 Internal Bore. Back 304 Stainless Steel straight shank with threaded mounting style. 0.0 lag length, 0.500 tip diameter and 0.500 root diameter.