Threaded Inserts Manufactured In The UK
Threaded inserts provide a strong, reliable threaded fixing in materials that may not be suitable for direct tapping, including plastics, composites, fibreglass, timber and other softer substrates.
Manufactured from high-quality 316 stainless steel, 303 stainless steel or brass, our self-tapping inserts are designed to create durable internal threads that resist wear, corrosion and repeated assembly, making them ideal for demanding engineering, marine and industrial applications.
Threaded Inserts for Every Application
At Bon Precision Engineering, we manufacture a range of threaded inserts in the UK, including blind self-tapping inserts, through-tapped inserts and bespoke solutions produced to customer specifications.
Threaded Inserts for Plastic Secure threads for ABS, nylon, acetal and engineering plastics.
Threaded Inserts for Fibreglass & GRP Corrosion-resistant fixings for marine, GRP and fibreglass applications.
Threaded Inserts for Wood Strong threaded fixings for timber, furniture and joinery projects.
Threaded Inserts for Composite Materials Reliable fastening solutions for carbon fibre and composite panels.
Thread Repair Inserts Restore damaged threads quickly without replacing costly components.
Threaded Insert FAQs:
A threaded insert is a fastening component designed to create a strong, durable internal thread in materials that may not be suitable for direct tapping. Threaded inserts improve thread strength, allow repeated assembly and disassembly, and can be used in plastics, composites, timber, GRP and other softer materials.
Threaded inserts can be installed into a wide range of materials, including plastics, nylon, acetal, ABS, timber, plywood, MDF, fibreglass, GRP, carbon fibre composites and other engineered materials. The most suitable insert type will depend on the material, load requirements and application.
Blind threaded inserts have a closed end, preventing fasteners from passing completely through the insert. They are often used where sealing or a controlled fastening depth is required. Through-tapped inserts are threaded all the way through, allowing bolts or screws to pass completely through the insert for maximum flexibility.
Yes. Our threaded inserts are manufactured from 316 stainless steel, offering excellent corrosion resistance in marine, offshore and outdoor environments. This makes them suitable for use in boats, marine equipment, coastal installations and other applications exposed to moisture and saltwater.
Yes. Threaded inserts are commonly used to repair worn, damaged or stripped threads. Once installed, they create a new, durable threaded fixing point, often restoring or improving the strength of the original thread.
Yes. In addition to our standard range, we manufacture bespoke threaded inserts to customer drawings and specifications. We can produce custom dimensions, thread sizes, lengths and design features to suit specialist applications and volume production requirements.
We manufacture threaded inserts in a range of metric thread sizes, including common options such as M3, M4, M5, M6, M8, M10 and M12. We can also manufacture threaded inserts in imperial sizes and with UNF threads. Please contact our team to discuss your requirements.
Self-tapping inserts are designed to cut their own thread into the parent material during installation. The insert is driven into a pre-prepared hole using the appropriate installation tool, creating a secure and reliable threaded fixing without the need for separate tapping operations.
Bespoke Threaded Inserts
For more specialised requirements, we can manufacture custom threaded inserts to your exact specification. This includes modified dimensions, alternative lengths, special head styles, custom diameters and application-specific design features.Working from customer drawings, samples or technical requirements, our experienced team can develop a solution tailored to your product, material and performance requirements.
Not Sure Which Insert You Need?
Our team can recommend the most suitable threaded insert based on your material, application and loading requirements.Whether you're working with plastics, composites, timber, fibreglass, GRP or repairing damaged threads, we can help identify the correct insert and provide a fast quotation.
Join our growing list of happy customers
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.