https://pmintegrators.com/Inventory/Q11BMZ/TW01-A-16-L-05-3-5-U
TW01-A-16-L-05 (3.5"U) | MAC-WELD Thermowell, Threaded, 0.260" Bore, 1" NPT, 3.5" U, 316 SST, 1/2"...
TW01-A-16-L-05 (3.5"U) | Mac-Weld Machining Ltd | Petroleum Measurement Integrators Ltd