Fastening Systems

For over 45 years the company has been committed to providing the most innovative fastening systems in every industry and for every use.

SHEET METAL

Inserts for sheet metal, section bars, tubes

SOLID PARTS

Inserts for solid, wood, metal parts

PLASTIC

Inserts for plastic materials

COMPOSITES

Inserts for composite materials

Featured products

Threaded bushes

Threaded bushes are ideal fasteners to create connections with high mechanical strength as well as to re-tap worn threads.

Threaded bushes

Widely used for quick and simple fastening and for connecting different components, studs are available in a variety of almost infinite versions in terms of shapes and sizes, which provide for each specific material a different insertion process.

Studs

Nuts

Specifically designed for applications on thin panels, the cage nuts allow you to arrange removable threaded venues within a pre-punched square hole.

Nuts

Rivets

Designed to make static mechanical fastenings, where welding is not possible, the rivets can be used on laminates, plastics and composites, with the dual/double advantage of being able to join more than two elements at a time, even of different materials.

Rivets

Case History: The Collaboration Between 3NTR and Specialinsert® in Additive Manufacturing

19 March 2025

Additive Manufacturing and Fastening Systems: An Evolving Challenge The rapid evolution of additive manufacturing and 3D printing is revolutionising the way industrial components are designed and produced. This advanced technology offers unprecedented design freedom, enabling the creation of lightweight, complex, and highly customised structures. However, as with any technological innovation, new challenges emerge, particularly regarding […]

Fasteners for Low-Temperature Applications

27 February 2025

When designing fastening systems, it is essential to consider the environmental conditions in which they will be used. These factors can be critical on their own, regardless of the application or the receiving materials. Temperature, in particular, has a significant impact on the performance and durability of fasteners. The Importance of Temperature in Fastening Systems […]