About us.
Siesco Valley was founded in 1983 as a quality supplier of screw machine, milled, and assembled parts for industries in the greater St. Louis Area.

We now supply parts throughout the United States, Puerto Rico and Mexico.

Important Events.

• In both 1986 and 1988, we expanded our plant.
• In 1988, we became Siesco Valley Screw Products, Inc.
• In May of 1995, we moved into our new 17,500 square foot facility.

Our growth has been due to the quality people we have been able to hire. Intensive training has led to an increased pride of workmanship by each employee which in turn leads to greater customer satisfaction.

We are now able to serve our customers with screw machine products up to 1-5/8" diameter in quantitites of 1 to 3,000,000 with each part meeting our standard of excellence.