Hot Coiled Spring

Coil Spring is open helical spring that offers resistance to a compressive force applied axially. Custom coil springs are usually coiled as a constant diameter cylinder. Most coil springs with material diameters under three-eighths inch are cold coiled. Almost all custom coil springs using over five-eighths in. bar stock are hot coiled.

There is an overlapping area from three-eighths in. to five-eighths in. material size in which the custom coil springs may be either cold coiled or hot coiled.The transportation industry is the largest user of hot coil springs. Agricultural implement manufacturers and construction equipment builders make up the next largest segment.