WIKA PART# TW15-M-B-I-ND-UD-03750-02000-G3-A-0 500-0500-ZZ-ZZ 05500 Z055006ZZZZYQ2 Threaded Thermowell TW15, solid machined Specifications according to data sheet: TW 95.15 Head Design: Round with hexagon Thermowell Style: Straight Unit of Measure: Imperial (inch) Process thread [P or E]: 1/2" NPT Instrument connection [N]: 1/2 NPT female Insertion length [U]: 3.750 inch Head Length: 2.00" Bar Material: Stainless steel 316/316L Bore size [B or d1]: 0.260 inch (6.6 mm) Root diameter [Q]: 0.500 inch Tip diameter [V or F3]: 0.500 inch Bore depth / stem length (US): 5.500 inch Tip thickness [Tt]: 0.250 inch (6.4 mm)