Our Square Threaded Inserts offer a simple way to add height adjustable feet or castors to tubular furniture and frames. They fit flush to the outside dimensions of the tube, are easy to fit and can then not be removed without the use of tools. Made from durable LDPE, this injection moulded item can be manufactured in a large variety of colours. We stock a standard range and run bespoke versions at our factory in Kent. Match the outside dimensions of your tube to the outside dimensions of the Tube Insert, then allow for the correct wall thickness option (the thickness of the metal wall).
We offer a standard stock range available for next-day delivery and can also assist with any custom enquiries that you have relating to this product. If you cannot find the part you are looking for, or need any help selecting the correct size, please call our Sales Team now on 01634 686504 and we will be happy to assist.
Tube Inserts are used as a low-cost alternative to welding or finishing open tubes. With multiple colour and finish options, as well as the ability to customise with embossed logo's or printed instructions, Tube Inserts are a way of adding a high-quality feel to your product. Once fitted, any sharp ends are protected and the tube is closed off from dirt and debris. When fitted to the tubes used as furniture or frames, the Tube Inserts work well as feet to protect flooring.
Benefits of using Square Threaded Inserts
- Simple way to add Adjustable Feet or Castors to tubular frames & furniture
- Offers a neat & safe finish to tube ends
- Push in application, ribbed for tight fit
- Available with Metal threads for Heavy Duty applications
Sinclair & Rush offers
- Free samples on all Plastic Tube Inserts
- Low minimum order quantities on Square Threaded Inserts
- Great discounts for larger orders
- Free technical advice from our UK based experts
- Same-day-despatch on Stock Items
- Short Lead-Times on UK made custom parts
- Free Delivery for Online Orders (UK Mainland only)
Many thanks to John Pope and the team at Sinclair and Rush - you were all really helpful throughout the project, I'm looking forward to working with you on the next installation!
Mary Branson, Artist
We have found Tom & the Sinclair & Rush team to be highly professional. They are quick to help with enquiries and orders placed. Sinclair & Rush are always flexible with delivers and the quality is always good.
Charlotte, Fasteners Industry
We are very grateful to Allan and the team at Sinclair & Rush for the tremendous support. Thank you to all those who have donated. We are so grateful for the support we’ve received and look forward to continuing our work together for many more years to come.
Debbie Cameron, head of development & fundraising, Fields of Life
S&R are very service-minded, and always ready to help. You can always call them, and get info on stock, leadtime and prices on all their items. If you have any request on other parts, they are more than happy to help you with that too.
Anders, Partner Distributor
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