Stepped Thermowells Mac-Weld stepped thermowells are designed and manufactured 100% in-house, and are made to accept standard and custom-made thermometers, thermocouples, bulbs and RTD?s. Bore Choose an optionNone0.26 in. Process Connection Choose an option3/4 in. NPT1 in. NPT Stem Material Choose an option304/L316/L Length Choose an option2.5 in.4 in.6 in.7.5 in.9 in.12 in. Options Choose an optionNoneMTR Test Clear Options Stepped Thermowells quantity Add to cart Part number: TW01 Series SKU: TW01 Series Category: Thermowell Tags: Stepped, Thermowell Due to global supply chain issues, prices are subject to change without notice.