J. LANFRANCO & Cie: The specialist in self-locking nuts for critical fasteners

ESL and ERM have been on the market for over 40 years, under the most extreme conditions. They have made J. LANFRANCO safety nuts the most recommended safety fastening system for critical assemblies and fixtures, avoiding equipment downtime and improving production targets.

EXTREME VIBRATIONS, TEMPERATURES & CORROSION

ESL	ERM	HCE	HUP
The ESL line of double-slotted nuts offers superior resistance to vibration, shock, extreme temperatures and corrosion. ESL nuts are reusable and ensure assembly and disassembly without loosening or seizing.	The ERM nut is a time-saving one-piece unit with an integrated washer (ESL + crimped washer). Result: fast electrical installations and maintained voltage during dynamic load tests.	The HCE nut is an all-metal self-locking nut capable of withstanding high temperatures.	High-temperature nylon ring self-locking nut (-40°C +230°C)

THE ADVANTAGES

Very often, installations are located in remote areas and operate in extreme environments. A high-quality, high-performance self-locking nut with a simple, seizure-free assembly and disassembly system is essential.

		Resistant to extreme temperatures and corrosion.
		Simple, seizure-free assembly and disassembly.
		Resistant to vibration, shock, stress and impact.
		Double self-locking slots, lock in any position.
		Quality: ISO 9001 2015 factory Full traceability / Marking of manufacturer (JL) and quality class on all parts.
		Longer life cycle, improved production times, lower maintenance costs and times.
		Constant torque, controlled precision and load-independent function.

EXTREME VIBRATION LOOSENING?

Whatever the sector of application, the LANFRANCO nut has been proving its worth to a wide range of customers in sectors such as railways, mining, cement, nuclear, offshore, compressors... for over 40 years.

At the same time, test reports from laboratories such as CETIM demonstrate the nuts' resistance to stress and vibration.

If your installations are far away, or if your teams don't have to stop, LANFRANCO nuts will save you time and improve your productivity.

Avoid unscheduled equipment stoppages and re-torquing, facilitate installation and/or maintenance operations, and maximize productivity.

CORROSION PROBLEMS?

Use of chromium-free 6 Rohs surface treatments, with a maximum salt spray resistance of over 1000 HBS.

ANTIGRIPPANT

More specifically, LANFRANCO uses a treatment containing a tin base as an anti-seize for stainless steel, STANAL™. This technology eliminates seizing problems, reducing maintenance and/or assembly times. It will no longer be necessary to damage an assembly, just unscrew the nut.