Tappex® provides solutions with its threaded fasteners to meet the demanding requirements found when seeking to mechanically assemble certain materials and/or combinations of those materials including: glass reinforced plastics (GRP), composite or combination(s) of metal alloys / thermoset plastics / structural foams / wood laminates / paper-based sandwich constructions. Increasingly OEMs & their supply chains are also specifying other materials such as carbon fibre & kevlar reinforcements for application in very light but mechanically-stiff structures. Tappex continues to meet these new application challenges for OEM and other critical industrial applications.

Tappex threaded inserts for woods & composites fall mostly into 3 broad categories:

  • Self-threading brass Foamserts
  • Plated / Stainless Steel or Titanium Trisert-3 inserts
  • Case-hardened screws and special rivet nuts (with patented bulge control feature).

Design guidance is available in all instances.

Tappex, in future, will respond with new fastening solutions in the emerging area of ‘light weight materials’ in structural applications.

Tappex Products - Trisert 3


Self-Tapping Plated Steel, Stainless Steel or Titanium Insert. The Tappex Trisert-3 has three cutting features to provide a balanced cutting action and reduced installation torque. It is suited for critical applications in hard plastics & light metal alloys and is available in two lengths, regular and long, and is based upon the Trisert Reduced Headed design.

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Tappex - Foamsert


Self tapping Brass Insert for use in Wood & 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 (GRP).

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Tappex Products - Rivet Nuts

Rivet Nuts

Suitable for use in Plastics and Composite materials The MultiRiv® / 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...

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