This U.S. industry comprises establishments primarily engaged in manufacturing heavy gauge springs by forming, such as cutting, bending, and heat winding, rod or strip stock.

Cross-References. Establishments primarily engaged in--

• Manufacturing light gauge springs from purchased wire or strip--are classified in U.S. Industry 332612, Spring (Light Gauge) Manufacturing; and
• Drawing wire and manufacturing wire spring--are classified in Subsector 331, Primary Metal Manufacturing.