Small stainless steel springs are used on these to hold the joint together.

The Shadow demanded, his voice now soft but like a steel spring.

"You can't send a steel spring out and get one back made of copper."

The commander's head snapped around as though driven by a steel spring.

You must have a body and nature of steel springs.

Steve bounded to his feet like a steel spring released.

The slap of the steel spring was a hideous sound.

This compression, like that of a steel spring, contains energy.

He held himself well, leaning against the door, his body tensed like a steel spring.

His body would be like the kind of steel spring that tough guys use to strengthen their hands.