The part
A small copper pin with a gold-plated surface, produced in large lots.
The requirement
The key dimensions are held to ±0.02 mm. On a part this small, a few hundredths of a millimetre decide whether it is in tolerance, and every lot must be.
Illustration model, not the customer’s part
Illustration model of the part
- Process
- CNC turning
- Material
- Copper
- Finish
- Gold plated
Arrow keys turn the part. Home resets the view. Number keys select a feature.
The process
The pin is turned in house and gold plated by a partner plating factory. A first-article report comes before production, and each lot is released through outgoing inspection.
What the customer receives
The parts and the outgoing inspection report for the lot.
Result
In the October 2026 outgoing inspection, the key dimensions stayed within 0.01 mm of nominal. The lot passed.