- Made with the highest grade of spring wire
- Spring made to ASTM standards
- Manufactured to commercial tolerances, as defined by the Spring Manufacturers Institute (SMI)
- Pack reflects both metric and imperial size
Century Spring Corp is the leader in the spring industry, offering the largest selection of springs in the world. Extension springs are designed to absorb and store energy as well as create a resistance to a pulling force. Century Spring Corp's range of springs are tough, durable and flexible.