Standard & Custom-Made Blind Self-Tapping Inserts
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- Standard & Custom-Made Blind Self-Tapping Inserts
Standard & custom made blind self-tapping inserts
Our Insert Range
Our Blind Self Tapping Inserts come with a range of internal threads, and a self cutting external thread.
We would recommend blind self-tapping inserts for use in applications where fluid ingression along the internal thread could be an issue.
The insert has a 45 degree shoulder with an undercut which provides an area where a sealant or bonding agent can be applied to help keep a watertight seal.
We can manufacture inserts to specific sizes or different thread combinations, such as imperial or fine pitch threads.
- Stainless Steel 316 / 303
- Brass
- Headed / Unheaded
Heavy Duty Blind Threaded Inserts
A different version of our Blind Inserts with a slightly larger external diameter and longer length. Manufactured in 316 A4 Marine Grade Stainless Steel.
Bespoke Blind Threaded Inserts
Of course, sometimes ‘standard’ just won’t cut it, and something more bespoke is required. We offer a non-standard blind self-tapping 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 and hole sizes for 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.