HiMould inserts


Brass Inserts for Moulding-in

The Tappex HiMould range of brass inserts has been designed as a technical improvement on the superseded Yardley style of threaded insert, specifically for moulding-in during the cycle of the moulding machine to provide the maximum performance.

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multisert inserts


Inserts for Cold Press, Heat or Ultrasonic Installation

The Tappex Multisert range of brass inserts for plastics has been developed to provide a multi purpose insert for various environments and applications. They are available in Short and Regular lengths both Unheaded and Headed.

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microbarb inserts


For pull through applications in thin section materials

The Microbarb incorporates all the standard features of the Multisert range but provides the designer and production engineer with a brass insert suitable for pull through applications in thin section materials. The performance offered by the larger diameter and head offsets the shorter barb length when compared to the equivalent Multisert.

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trisert inserts


High performance Self Tapping Brass Insert

Self tapping brass insert for use in Thermoplastic and Thermoset plastic materials. The concept of the Tappex Trisert design is to provide a reliable and efficient post-mould production process, where the installation torque can be controlled and monitored for increased reliability.

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trisert-3 inserts


Self Tapping Plated Steel or Stainless Steel Insert

The Tappex Trisert-3 has three cutting features to provide a balanced cutting action and reduced installation torque. The Trisert-3 is suited for critical applications and is available in two lengths, regular and long, and is based upon the Trisert Reduced Headed design.

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foamsert inserts


Self Tapping Brass Insert for use in lower density materials

The Tappex Foamsert is a special version of the Trisert and has a very coarse truncated external thread form. The Foamsert threaded insert ideally suited for use in structural foam materials, laminated chipboards, medium density fibre board and certain types of glass reinforced plastics.

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setsert inserts


Brass Insert for hard plastics

Threaded insert designed for cold press installation into hard and filled thermoplastic and thermoset plastic materials. Available as a Single and Double Ended brass insert.


suresert inserts


Brass insert for stress prone plastics

Threaded insert designed for Ultrasonic or Heat installation into notch sensitive thermoplastics. The double ended design is easy to orientate for manual or automatic installation.


male inserts range

Male Inserts

Brass Inserts to provide a male thread

Press fit, Self Tapping or Mould-in For Plastics. Tappex offer a range of Male Inserts based upon the female equivalent, they can be supplied with a dog point to ease location of the nut and reduce the risk of cross threading.

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Variation on a Tappex Standard Part or entirely to your specification

If there is not a standard Tappex insert, which suits your application, you may well find that there is already a 'Special' Tappex insert available that is suitable.


anti-creep spacers

Anti-creep Spacers / Compression Limiters

Cold press fit or Moulded-in to suit the application

Anti-creep spacers are designed to provide reinforced clearance holes for bolts to pass through a plastic moulding, and thus allow metal-to-metal clamping forces to be applied to an assembly without over-stressing the plastic.


grooved pins

Grooved Pins

Simple, Reusable, Resistant to Shock and Vibration

Universal Fastening System. The Grooved Pin range has provided fastening solutions in a number of industry sectors including: machine building, chemical equipment, manufacture, precision engineering, automotive and electrical engineering.

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splay mould range

Splay Mould

Male Steel Insert for a High Strength Solution

Tappex are extending the range of male inserts for moulding by introducing the SplayMould® male steel insert. Often customers expect to be able to apply standard tightening torques at the point of assembly and in application to enable existing equipment and set ups to be utilised. The Tappex SplayMould® offers a high strength solution.


dedserts range


Heat or Ultrasonic Installation into Thermoplastic Materials

The Dedsert design includes two bands of helical knurling with left and right helix providing high performance.


imperial range

Imperial Range

Imperial thread sizes

Tappex can manufacture most Imperial thread sizes using the external features of the nearest metric equivalent product, so design information will be the same as listed. Popular sizes are available from stock; other sizes are available to order in reasonable batch quantities.


thread forming screws range

Thread Forming Screws

Installed into drilled or moulded holes - wide variety of applications

Tappex TPX screws are produced by cold forging, not machined from bar or wire and therefore have good inherent mechanical properties with minimum residual stress material into which it is being installed.


ensat inserts


Steel and Stainless steel Self Tapping Inserts

Steel/Stainless Steel Insert For Self-Tapping Installation. The Ensat is a single ended self tapping threaded insert with an internal and external thread.

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rivet nuts

Rivet Nuts

Suitable for use in Plastics and Composite materials

The Rivet Nut is designed with four holes to control the deformation of the body. This property enables the use of Rivet Nuts in applications and materials where they would otherwise not be suitable. They are available in a range of materials, grip ranges and in headed and reduced head styles.


installation equipment

Installation Equipment

Tappex Hand Tools, Arbour Press, Heat Inserter, FlexiArm and DuraArm

Tappex offers a range of Installation Equipment for small to medium volume applications. Designed to be adjustable and flexible, with the ability to be adjusted or modified to suit a number of insert sizes and wide variety of installation conditions, the equipment will be useful beyond the application for which it was purchased.


future developments

Future Developments

Innovation through testing and research

Tappex is continuously developing products to meet market demand and customer requirements please contact us with your requirements.

Tappex Thread Inserts Limited

Threaded Inserts for Plastics, Metals and Wood

Tappex Thread Inserts Limited based in the UK is a key part of a privately owned SME group of companies established for over 57 years serving both both OEM's & Plastics Industries and their supply chains on an International basis.

Thread inserts and fastening solutions

Tappex is an original supplier of Threaded inserts with in-house capabilities for the design, prototyping and manufacture of Brass Thread inserts and Steel Threaded inserts. OEM applications in most plastics, composites and now light metal alloys are supplied with both off-the-shelf availability or if it demands, developing bespoke fastening solutions to service customers critical requirements on a global basis. Tappex are able to provide all customers Technical suport in terms of design assistance, CAD data, prototyping & Mechanical-test services (in house) along with their comprehensive group-manufacturing capabilities suitable for both low & high volume demand. Tappex can provide also bespoke Installation equipment & tooling solutions for both self-threading & HEAT installed threaded inserts. Tappex product portfolio extends nowadays to include also: Compression limiters/anti-creep spacers; Threaded inserts for brittle plastics; Cold-forge Grooved pins(dowels), Thread forming-Screws and special RivetNuts developed for composite materials.

Industries and applications

Tappex serves a diverse & discerning range of customers in many industrial sectors including: Aerospace, Automotive, Electronics, Machine Tool Controls, Motorsport, Telecommunications, White & Brown Goods - all of whom have requirements for Threaded Inserts.  Our Applicatons page provides more details.

Latest News
  • Tappex, Stand 11 at the FAST Show , Gaydon Heritage Motor Museum 27.3.14 Posted 14th March 2014 Tappex will be exhibiting at the forthcoming FAST Trade Show on the 27.3.14 , Gaydon Heritage centre, CV35 0BJ. Their link: www.heritage-motor-centre.co.uk This is a new new venue for the FAST Show and a return by Tappex Thread Inserts Ltd to annual event. Technical staff from Tappex will be on hand all day to discuss / support visitor enquiries for Thread Inserts for Plastics, Metals & Composites along with applications know-how over past 57 years of supplying the OEM, Plastics Industries & Global-Manufacturing supply chains. Read more
  • SMMT Automotive/Open Forum, Worcester 19.3.14 - Tappex Group Exhibiting. Posted 17th February 2014 Tappex Thread Inserts Ltd & Pressavon Ltd together, as the two UK based manufacturing companies of the Tappex Group, will exhibit together at the forthcoming SMMT Automotive / Open Forum, 19.3.14 @ Worcester Rugby Club, WR3 8ZE. Tappex Companies will present their range of Automotive & Industrial supply capabilities and will have experienced, technical-sales staff on hand to further help visitors with their enquiries & information requirements. Read more
  • Tappex - follow us on YouTube Posted 16th February 2014 Tappex has developed for accessibility on YouTube, videos of it's Threaded Inserts for Plastics, light- metal alloys & Composite materials. Enter on the YouTube search word box: either Tappex or Threaded Inserts and this will lead you to our page. Tappex Thread inserts can be viewed being installed into a variety of plastic materials utilising bespoke Tappex installation equipment and insertion processes i.e. COLD & HOT press-in and self-threading inserts utilising their widely-acclaimed FlexiArm with Pnuematic Torque settable screwdrivers. Tappex the home of Threaded Inserts for Plastics since 1957. Read more
  • Tappex - follow us on Twitter. Posted 14th February 2014 Tappex can now be followed on Twitter with links also to our forthcoming blog with advice on Threaded Inserts / Tappex Tips / Inserts for Plastics & Composites helpful advise. Tappex can be found https://twitter.com/Tappexltd Read more

New Downloads

  • Tappex MultiRiv Details Features, Dimensions and Part Numbers Download (789.97KB)
  • Tappex MultiRiv Handool Details of the Tappex MultiRiv Handtool 027KS-08M4-M10 Download (113.74KB)
  • ETP 45 Tappex TPX Thread Forming Screws Features, Design Considerations, Hole Design Features and Dimensions. Download (119.39KB)
  • ISO 14001 EMS certificate Downloadable copy of the ISO 14001 EMS certification Download (594.76KB)
  • ISO 9001:2008 Certificate Downloadable copy of the Tappex ISO 9001 2008 certification Download (530.88KB)
  • Tappex 2014 Brochure Product brochure with overviews and descriptions of products Trisert, Trisert-3, Foamsert, Multisert, Microbarb, HiMould, Anti-creep-spacers, Multi-riv, Male Inserts and our Installation Equipment Download (2.57MB)