Wisconsin Coil Spring is a manufacturer of custom mechanical springs. They manufacture compression (ground or unground) extension and torsion springs, with wire diameter capability ranges from .004 to .275. Wisconsin Coil Spring also manufactures flat and round wire forms. In addition, the company provides shotpeening, demagnetizing, tumbling, passivation, painting, color-coding along with various plating finishes. They are also ISO 9001:2008 certified. Member since 6/25/2012.