Steel hex thermowells with long threaded studs – the stud passes through insulation or thick walls and the hex takes installation torque. Steel carries the mechanical duty; specify plating if the environment is wet.
Function and Design
Most of the difficulty in a hex thermowell is invisible: wall consistency, concentricity, burr control. Tolerances that matter are confirmed with capability data before the hex thermowell is quoted.
What Makes It Work
- Threads are machined and gauge-checked on every piece, so make-up torque lands in the joint, not in the thread.
- Hex dimensions are controlled, so a standard spanner seats properly under load.
- Batches are held consistent by first-article verification and in-run sampling.
- Material: We hold carbon steel (SPCC / DC01 or to print) for hex thermowell production; special grades are sourced to the drawing when volumes justify.
- Process: drawn hex thermowell, then machined sealing faces and pierced ports on the second operation, thread turning to gauge.
- Finish: Surface treatment is chosen for the duty the hex thermowell sees: plated, coated or natural per print.
- Size: Final dimensions of the hex thermowell to your drawing; this page shows the family, your version is quoted from the print.
- Custom: OEM/ODM hex thermowell work – first articles verified before production starts.
Where It Is Used
It earns its place in NTC and PT100 probe assemblies, household appliance thermometers, industrial process instrumentation.
Our Production Advantage
Drawn shells are stress-relieved before critical faces are machined. Threads are gauged, sealing faces are checked, and the first article report travels with the batch.
Free samples and OEM pricing for the hex thermowell are available; send the drawing and we review it before quoting.