J.LANFRANCO & Cie - The French Specialist in Self-Locking Nuts for Critical Fastenings.
Founded in 1974, J. Lanfranco & Cie specializes in the manufacture of high-end self-locking nuts and security fasteners. Over the years, the ESL and ERM have made Lanfranco's security nuts the most recommended safety fastening system for critical assemblies and installations.
Product Range
The Lanfranco range includes a wide variety of technical fasteners and self-locking nuts..
Among the flagship products, you will find :
- Self-Locking Hexagonal Nuts with single or double slots, with or without a movable washer (ESL, ERM ranges).
- Self-Locking Non-Metallic Insert Nuts (nylon) available in all sizes (HMP, HUP, EUM ranges).
- Other Security Fasteners : deformed nuts (internally deformed nuts), flange nuts, riveted nuts, as well as modular fasteners in aluminum or stainless steel.
- Custom Parts : design and manufacture of specific fasteners according to customer specifications.
ESL |
The line of double-slot nuts provides better resistance to vibrations, shocks, extreme temperatures, and corrosion. ESL nuts are reusable and ensure assembly and disassembly without any loosening or seizing. |
 ERM |
The ERM nut is a unique piece that saves time with its integrated washer (ESL + crimped washer). As a result: Quick electrical installations and maintained tensions during dynamic load testing. |
HCE |
The HCE nut is a fully metallic self-locking nut capable of withstanding high temperatures. |
HUP |
Self-Locking Nut with High-Temperature Nylon Ring (-40°C to +230°C) |
The Advantages of J.Lanfranco & Cie Products
Very often, installations are located in remote areas and operate in extreme environments. It is essential to have a high-quality self-locking nut that performs well with a simple assembly and disassembly system, without seizing.
Each Lanfranco product is designed for critical applications. The nuts are available in a wide range of diameters (from M2 to M68) and materials (steel, stainless steel, special alloys), with options for anti-corrosion surface treatments (zinc plating, cadmium plating, fluorocarbon, etc.).
J. Lanfranco also provides modular profilers and associated accessories for industrial assemblies.
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| Resistant to Extreme Temperatures and Corrosion. | Simple Assembly and Disassembly, Without Seizing. | Resistance to Vibrations, Shocks, Stresses, and Impacts. | Double Self-Locking Slots, Locking in Any Position. |
Quality: ISO 9001:2015 Certified Factory Total traceability / Manufacturer marking (JL) and quality class of all parts. |
Longer Lifecycle, Improved Production Times, Reduced Costs, and Maintenance Time. | Constant Torque, Controlled Precision, and Load-Independent Function. |
