About Us: Precision Services for Metal Parts

Founded by Leonard Petersen in 1966, Petersen Precision has been manufacturing high-precision metal parts for more than fifty years. We produce small to medium-sized parts in production volume to match your prints. Each order is completely customized, including individualized precision processes and CNC machining services to achieve your production tolerances.

Contact us or request a quote today.

A Proven History of Premium-Quality Metal Parts

After graduating from Standford in the late 1950s, Leonard Petersen got his start in the data storage industry, working for Ampex in Redwood City, California. In 1966, he set out on his own down the street from Ampex and started the metal and grinding business that is Petersen Precision Engineering. By 1978, the business had grown so much that a second production facility had to be built to keep up with expanding customer demand.

By the mid-1980s, Leonard Petersen had become equal partners in Petersen Precision with his longtime friend and original investment partner, Phil Olsen. A hands-on partner, Olsen was involved in the business side of the company until his retirement in the 1990s. Under their leadership, Petersen Precision grew, innovated, and increased production to meet the needs of an extensive range of industries.

Peterson Precision Today

Today, we are still a privately held business co-owned by Phil Olsen and the heirs of founder Leonard Petersen, who continue to serve as active board members. Since 2016, Fred Petersen, Leonard’s son, has been the General Manager of the company.

Our 55,000-square-foot ISO 9001-certified manufacturing facility includes an in-house tool and die shop that provides design, fabrication, and maintenance for all of our fabrication tooling. An on-site engineering staff works efficiently, simplifying production and passing the savings on to you, our customers. Ready to learn how Petersen can support your business? Call 650-365-4373 today!

CNC Machining Services & Other Capabilities

No two CNC machining services or production processes are exactly alike, and Petersen Precision is ready to tackle the rigors of your order. We use state-of-the-art technology to ensure complete accuracy during your production. To meet your unique needs, we have expanded our capabilities considerably over the years to offer many precision services, including:

Additionally, our team’s expertise includes lean manufacturing, Six Sigma-based process analysis, DOEs, statistical process control, PPAP, and other value-added services.

Metal Materials to Match Your Needs

Petersen Precision is prepared to work with many metal materials to produce your precision parts, including options that are historically difficult to machine. Our team has the knowledge and experience to manufacture precision metal parts from:

Industries We Serve

Precision industries require uncompromising metal parts. We specialize in manufacturing metal parts to match the strictest guidelines for use in the most demanding markets, such as:

Learn More About Our Precision Services

From prototyping to volume production and beyond, Petersen Precision is in your corner. We operate a variety of process technologies and precision services to deliver accurate and high-performance results on every order. Since we first opened our doors, we have been committed to providing high-quality metal parts paired with the industry’s best customer service and engineering excellence.

When you need precision services from a trusted partner, you need Petersen Precision. Get started today.



Petersen Precision building


Petersen Precision Shipping and Receiving dock