Full Introduction Of French Lanfranco All-metal Lock Nut Brand, High Temperature Resistance & Foreign Trade Project Specification

Full Introduction Of French Lanfranco All-metal Lock Nut Brand, High Temperature Resistance & Foreign Trade Project Specification

Founded in France, Lanfranco has specialized in elastic thread self-locking technology for nearly 70 years. Different from Hard-Lock two-piece wedge structure, it adopts single nut internal thread deformation self-locking design without matching parts, showing outstanding advantages for frequent maintenance and long-term high-temperature working conditions. It is the designated imported lock nut for European high-temperature heavy industry, PV trackers and high-speed rail maintenance equipment. Fastener_hk stocks full original series in Hong Kong warehouse.

1. Core Parameter Comparison Between Lanfranco & Hard-Lock Import Lock Nuts

2. Mandatory Original Assembly Notes For Lanfranco Nuts

1. Assembly rule: Single nut independent installation without auxiliary nut, greatly simplify production line process and cut labor cost; 2. High-temperature material selection: A5 (316Ti) stainless steel Lanfranco nuts are mandatory for pipelines running at 200℃ long-term, carbon steel versions suffer stress relaxation above 150℃; 3. Matching taboo: Do not stack with NORD-LOCK wedge lock washers, dual locking structures counteract preload force mutually; 4. Anti-corrosion matching: Coat high-temperature anti-corrosion grease on threads for coastal PV trackers to avoid thread seizure caused by temperature difference during maintenance.

3. Customs, Factory Audit & Procurement Risk Control Key Points For Foreign Trade Orders

1. Genuine identification: Original Lanfranco nuts carry complete laser brand marking on side surface, counterfeits have blurry logo and poor thread deformation precision; 2. Customs declaration: Truthfully fill overseas brand Lanfranco, provide French original agency authorization to avoid detention during IP inspection; 3. Audit documents: Original French mill test report, high-temperature mechanical test certificate and EU RoHS certificate attached per batch; 4. Replacement ban: Domestic single-deformation lock nuts or Hard-Lock two-piece nuts cannot substitute if drawings specify Lanfranco, overseas supervisors will reject project acceptance.