About
Founded in 1974, J. Lanfranco specializes in the design and manufacture of self-locking nuts for high-stress and safety-critical applications. Based in France, the company has built a reputation for producing fasteners that perform reliably in industries where vibration, fatigue, and extreme conditions are present. With over 40 years of expertise, J. Lanfranco serves global markets in aerospace, railway, defense, energy, and heavy industry.
Products
- Self-locking nuts (two-piece and three-piece designs)
- SLI nuts with all-metal locking mechanism
- ERM and ESL series locknuts for high vibration resistance
- Specialized locknuts for extreme environments
- Custom-engineered fastening solutions
Industries Served
- Aerospace and aviation
Railway and transportation - Defense and military applications
- Energy production and nuclear power
- Heavy equipment and construction machinery
- Oil, gas, and petrochemical industries
Quality & Standards
- ISO 9001 certified manufacturing
- Products tested under severe vibration and fatigue conditions
- Compliance with international standards (EN, ISO, NF, MIL, and others)
- Commitment to continuous innovation and product development