About Us

Who is Winamac Coil Spring

Winamac Coil Spring, Inc. is proudly owned and operated by generational descendants of our original founder, Walter Pesaresi. We were established in 1948 and have grown steadily to be one of the largest single location spring companies in the United States. Today, the company is led by the third and fourth generation descendants of Walter Pesaresi. The hard work and commitment to customer satisfaction of our founder is the cornerstone of our company’s success today as a leading manufacturer of compression, extension single and double torsion springs, and wireforms. Our mission is to ensure premium quality springs that exceed customer satisfaction.

We are conveniently located in Kewanna and Winamac, IN and serve the following markets:


off-road recreational

lawn and garden




RV (recreational vehicle)





general industrial markets

Our Commitment to Innovation

Our company also recognizes the importance of technology and strives to provide springs and wireforms to our customers that are produced on the latest NC spring formers and secondary equipment. We also embrace lean manufacturing and 5S initiatives to improve our quality, competitiveness, and profitability. Because of our commitment to innovation, Winamac Coil Spring, Inc. has been selected as sole or primary source by many of our customers. Several reasons for this honor are dedication to customers, total quality commitment, broad manufacturing capability with wire sizes ranging from .008″ to .625″, state of the art coiling and secondary equipment, excellent technical support and most importantly, because of our greatest asset, our empowered, well-trained and highly motivated employees.Winamac Coil Spring, Inc. is also ISO 9001:2015 registered and we are proud members of the following:

  • The Spring Manufacturers Institute (SMI)
  • The Farm Equipment Manufacturing Association (FEMA)
  • The Chicago Association of Spring Manufacturers, Inc. CASMI)

Behind each spring is the Winamac Coil Spring, Inc. tradition of unmatched quality and customer service built over decades of commitment to our customers, regardless of company or order size.We also offer in house shot peening for improved spring fatigue life. Our engineering department utilizes custom spring design software along with PRO-E 3-D modeling to help develop your custom design requirements. Powder coat, E-Coat and Electroplating are available locally at a competitive cost.