Our Approach to Quality Metal Stamping


Experience You Can Trust

From humble beginnings in El Monte, Calif., in 1947, with only a few punch press machines, Trio Metal Stamping opened the doors for business with the goal of becoming a leading precision metal stamping company. Trio has continued to grow over the last 70+ years with 20 highly skilled team members and state-of-the-art equipment in a 35,000-sq-ft. facility.


Quality at a Competitive Price

Trio's management team has more than 125 years of collective experience in the manufacturing environment, with our core competency being sheet metal and sheet metal stamping. Our knowledgeable staff enables us to handle challenges such as short lead times, complex parts and high-quality demands at a competitive price.


Long-lasting Relationships

Our mission is simple: to be recognized as your first choice in providing quality short run precision metal stamping and assemblies. We achieve this by building long-lasting relationships with our customers through open communication, continuous improvement and a relentless drive to understand and exceed your requirements.

Over the years, our company has continued to maintain and improve its quality, most recently achieving AS9100D/ISO 9001:2015 certification.

Today, Trio Metal Stamping provides precision metal stampings and assemblies in short and medium run quantities (1-250,000+) to multiple industries, such as aircraft, aerospace, automotive, medical, military, turbine power, business hardware and consumer goods industries.


Let us exceed your expectations.