Lock pin
The most common material for pin-tumbler locking cylinders, keys, and components is brass. Cylinders and components (pins, levers, wafers, etc) also commonly use nickel-silver, steel, and other materials.
![](https://neartex.com/wp-content/uploads/2021/07/Loop-Pin.jpg)
The most common material for pin-tumbler locking cylinders, keys, and components is brass. Cylinders and components (pins, levers, wafers, etc) also commonly use nickel-silver, steel, and other materials.