Thread Reducing Inserts & Thread Repair Inserts
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Standard & Custom Made Thread Reducing Inserts
Our Insert Range
Our through tapped inserts have standard coarse metric internal and external threads. They are ideal for use on pre-tapped holes which makes them suitable for most materials.
Our range is available in blind and through-tapped forms with a choice of headed of unheaded options.
They provide the perfect solution for stripped threads, where the damaged thread can be re-drilled and tapped to a larger thread size, and the appropriate insert is used to get the original thread size back.
They are a popular choice when working with softer materials as the component with self-cut into most materials.
- Stainless Steel 316 / 303
- Brass
- Headed / Unheaded
Bespoke Thread Reducing Inserts
Of course, sometimes ‘standard’ just won’t cut it, and something more bespoke is required. We offer a non-standard thread reducing and thread repair insert service to accommodate any bespoke requirements you may have.
We manufacture custom-made inserts to your unique specifications or drawing, adapting the head, diameter, threads and hole sizes to suit your application.








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Don’t just take our word for it—read what our customers say about Bon Precision Engineering. Our reputation and integrity mean everything—and we are proud to have received some great feedback from our customers.
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“I've worked with Bon Precision both commercially and as a boat owning aficionado and can't recommend them highly enough.Their desire to fulfil your every requirement is legendary, complimenting perfectly their refreshingly efficient despatch and delivery times. A joy to do business with.”

"We work with Treehouses, Rope Bridges and rope-work balustrades internationally, as such designing and looking for very specialist production of stainless steel fixings suitable for marine environments. On a search for threaded inserts, we were delighted to discover Bon Precision and on enquiry became very excited that we were dealing with not only a supplier but an expert company who could design, fabricate and test very specialist requirements.We had a huge quantity order for a project in the Middle East, the team at Bon Precision engaged fully and immediately with the project, sent a range of samples and designed a bespoke solution to our specific requirement. Our customers demand world-class quality and certification plus the ability to respond to bespoke and crafted requirements. Our projects worldwide are hugely supported by the first-class service and commitment given by Bon Precision.”

D&M Tech have worked with Bon Precision Engineering on several projects. They have produced a variety of CNC turned components for us, with fast turnaround times and excellent communication. We were particularly impressed when you managed to turn a component to 0.46mm diameter for a complex component. We’ve found Bon Precision Engineering to be very knowledgeable, helpful and easy to work with.