
Custom high-precision electrical contacts – co-design, machining and plating from Switzerland.
Lemco Précision SA
Route de la Greffaz 31, CH-1895 Vionnaz · SwitzerlandNew on Amplifa
About Lemco Précision
Lemco Précision SA is a Swiss manufacturer of custom electrical contacts with over 60 years of experience in high-precision machining. The company manufactures male and female contacts in various shapes and sizes, including standard, bent, complex and miniature contacts, according to customer specifications in a co-design process. Production takes place at two sites in Switzerland with more than 500 machines, including high-speed automatic lathes, multi-axis CNC machines and transfer machines. The annual production capacity exceeds 600 million contacts. As a vertically integrated company, it covers the entire value chain, including plating, prototyping and 100% quality inspection with a zero-defect target. Industries served include aerospace, commercial aviation, industrial, transportation, telecommunications, medical technology, test & measurement and fiber optics.
- Site
- Vionnaz
- Processes
- Custom Electrical Contacts (Turned High-Precision Parts, Custom Contacts), Pin crimp (Miniature pin contacts per AS 39029 & EN 3155), 90° bended socket (90° bent sockets, size #20 machine-manufactured), Hooded socket with Press-Fit (Press-fit hooded socket for PCB mounting), Plating services (Galvanic/Surface Coating), Co-Design / Engineering Support, Prototyping through Series Production, Quality Inspection / Quality Testing (100% Inspection, Zero-Defect Target), Co-Design/Engineering Support
- Materials
- Multi-axis CNC Machining, High-Speed Automatic Lathes, High-Speed Transfer Machines, Plating / Galvanic Coating
- Certificates
- EN 9100, RoHS Compliant, REACH Compliant
- Founded
- 1965
- Industries
- Aerospace, Commercial Aviation, Industrial, Transportation, Telecommunications, Medical Technology
- 01
Co-Design / Engineering Support
- 02
Prototyping
- 03
Machining (automatic lathes, CNC, transfer machines)
- 04
Plating / Galvanic Coating
- 05
Quality Control (100% Inspection)
- 06
Delivery
Materials & Processes
Multi-axis CNC Machining
Precision machining of custom contacts in complex geometries and miniature sizes.
High-Speed Automatic Lathes
Series production of high-precision turned parts in high volumes.
High-Speed Transfer Machines
Efficient manufacturing of standard and special contacts in large series.
Plating / Galvanic Coating
Surface coating of contacts as an integrated production step.
Sites

Vionnaz
CHProduction site
- Lot size
- Prototype to large series
- Materials
- Contacts made from machinable materials
- High-speed automatic lathes
- Multi-axis CNC machines
- High-speed transfer machines
Parts & Products





Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Custom Electrical Contacts (Turned High-Precision Parts, Custom Contacts)Machining | – | – | – | more than 600 million contacts per | – |
| Pin crimp (Miniature pin contacts per AS 39029 & EN 3155)Machining | – | – | – | – | – |
| 90° bended socket (90° bent sockets, size #20 machine-manufactured)Machining | – | – | – | – | – |
| Hooded socket with Press-Fit (Press-fit hooded socket for PCB mounting)Joining | – | – | – | – | – |
| Plating services (Galvanic/Surface Coating)Surface Treatment | – | – | – | – | – |
| Co-Design / Engineering Support, Prototyping through Series ProductionEngineering | – | – | – | – | – |
| Quality Inspection / Quality Testing (100% Inspection, Zero-Defect Target)Inspection | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| High-speed automatic lathes (high-speed screw machines) | – | – | – | – | Vionnaz, Switzerland (two production sites in Switzerland) |
| Multi-axis CNC machines (multiaxis CNC machines) | – | – | – | – | Vionnaz, Switzerland (two production sites in Switzerland) |
| High-speed transfer machines (high-speed transfer machines) | – | – | – | – | Vionnaz, Switzerland (two production sites in Switzerland) |
| High-precision machines (over 500 machines in total) | – | 500 | – | – | Two production sites in Switzerland |
Additional services
Quality & Certifications
All products undergo extensive quality inspections before delivery with 100% inspection and a zero-defect target. The quality management system is certified to EN 9100; RoHS and REACH compliance is demonstrated.
| Evidence | Vionnaz |
|---|---|
| EN 9100 | |
| RoHS Compliant | |
| REACH Compliant |
History
- 1965
Foundation and start of expertise in the manufacturing of high-precision electrical contacts.