Bolt Heaters

The primary use of bolt heaters is for preheating bolts or studs on heavy machinery and equipment. To ensure bolts don’t come loose under immense pressure, a high concentration of heat is used to aid the tightening of the bolts. As the parts subsequently cool and contract, the bolt or stud tightens further, ensuring a secure connection.

Straight Bolt Heaters

Easy to insert into the centre of the bolt, it only takes a few minutes to reach the required temperature. Once the bolt has reached its maximum expansion, it can be tightened or loosened as required.


Our bolt heaters are manufactured to order. Standard parts are kept in stock and assembled to suit customer requirements.

Those requirements will include hole diameter and heated length of the bolt. We will then advise the maximum wattage we can supply.

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Bolt Heater FAQs

IEE bolt heaters allow you to buy with confidence from a quality supplier. You can find out more below, or if you have any questions, please visit our contact us page.

We have UK stock for fast delivery or collection, and our team will ensure you not only receive the right specification bolt heater for the job but also receive advice on maintenance and can support your queries.

If you have no overhead clearance issues when accessing the bolts you need to tighten, then the straight heating rod will be the best choice. However, if you need to access bolts in confined spaces or at awkward angles, we’d recommend our flexible bolt heaters.

We can offer next-day delivery or same-day collection to UK customers. We also ship internationally, but shipping times may vary.

Commonly used in the assembly or maintenance of hydraulic presses, turbines, machinery, automobiles, heavy equipment and anything that requires air-tight secure connections.

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Contact us today with your bolt heating requirements, and a member of our team will get back to you.

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