About Groth Manufacturing

Quality CNC, Screw Machined and Fabricated Parts

Our Mission

It is our mission to always produce the best machined products for our customers from their prints with on-time delivery and quality, responsive customer service.

Providing the best machined parts, we also work hard to be a part of the team with our customers. We seek long-term partnerships."

John Groth, President, Groth Manufacturing

Our History

Groth Manufacturing was founded in 1974
as American Precision Machine Products, Inc.

In 1996 American Precision Machine Products was purchased by John Groth. The name was changed from American Precision Machine Products to Groth Manufacturing. At the time of purchase, American Precision Machine Products had 10 screw machines and 1 CNC. Over the years, Groth Manufacturing has traded, sold or bought over 48 CNCs. Over 20 of them are now on the floor, and we currently have over 50 pieces of equipment in the building. John Groth invested in modernization of the facility and promotes positive intellectual influences in the working environment. After more than 20 years, and now in 16,000 square feet, Groth Manufacturing is proud to still be serving our customers well.

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As part of the supply chain, we know it is vital to your business and ours to work to international industry standard.

FFL Licensed


Federally licensed to machine parts for firearms.
FFL 07 License Information



Our skills and programs are compritive and kept up-to-date.


Gibs CAM

Esprit CAM

EPA Certified


Groth Manufacturing is EPA Certified, and follows environmentally responsible practices.