+33 (0)1 40 04 92 30 Lun - Jeu 7h30 - 17h30 / Ven 7h30 - 16h 37, Avenue de Saint-Mandé 75012 PARIS
+33 (0)2 48 50 18 10 Lun - Jeu 8h - 17h / Ven 8h - 16h Rue du Minerai 18570 La Chapelle-Saint-Ursin
ISO 9001 since 1998

J. Lanfranco & Cie Specialist in the manufacture of self-locking nuts with high standards and in safety fastening. ESL and ERM have been present on the market for more than 40 years, under the most extreme conditions Read more
The best choice to ensure
reliability of your assemblies
BECAUSE the safety and the security of your fasteners are our priority
Specialist in high-end safety
fastening since 1974
1 manufacturing site in France, 1 Canadian subsidiary , 1 Brazilian subsidiary,
representatives and distributors all around the world
Recognized and used all over the world,
50% of our turnover for export business
J. Lanfranco & Cie, a story

Present on the market for more than 40 years, ESL and ERM have made Lanfranco safety nuts the most recommended safety fastening system for critical assemblies and critical joints.

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J. Lanfranco & Cie, a leader

A park machine specially designed, developed and built for our business with a large storage capacity

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J. Lanfranco & Cie, certified

A company certified ISO 9001-2015 in constantly improving its management and quality system

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J. Lanfranco & Cie


Sectors of Activity

Tolten Bridge

Construction of the new Tolten Bridge in Chile. The previous fastening system with expensive tools and a type of nut that could not be reused without causing significant damage to the surface on which it was supported was abandoned in favor of the J. Lanfranco self-locking nuts.


The Cable from the Sugar Loaf cable car to Rio.

Fixing the mechanical element passing over the piping system of the cable car cable

National Cement Brazil

Use of J. Lanfranco self-ground nuts in cement plants, on mills (SAG & BALL) and motors Mounting diameters greater than M20 chosen for their resistance to vibrations

Infrastructure, tracks and signalling

A particularly demanding example due to climatic conditions, very heavy vehicles on poorly maintained tracks. Fixing freight switches in Canada that can withstand these extreme conditions (overloaded freight vehicles, high thermal amplitude)

Who are we?

Founded in 1974, J. Lanfranco & Cie specializes in the manufacture of high-end self-braked nuts and safety fasteners. ESL and ERM have been on the market for more than 40 years, in the most extreme conditions.

They have made Lanfranco safety nuts the most recommended safety fastening system for critical assemblies and assemblies, avoiding material downtime, improving production targets.

EXTREME VIBRATIONS, TEMPERATURES & CORROSION Whatever your environment, cold, heat, humidity, corrosion, our nuts will allow you to bring added value: longer life cycle, improved production times, lower costs and maintenance time.

Certified ISO 9001 since 1998, our company makes every effort daily to improve its quality management system.