In 1963, Roy Selway walked into a Bank of America branch in Emeryville, CA and asked for a $5,000 loan to buy Mid Coast Machinery, the company he was working for at that time. The branch manager asked what kind of collateral Roy had and the response was "7 sons". Roy got the loan and Selway Machine Tool Co., Inc opened its doors on San Pablo Ave in Emeryville, CA. Early in 1968, Roy Selway passed away at the young age of 50 from a heart attack. His wife Margaret and two oldest son's Bill and Pat took over the business. Over the years all of Roy's sons have been involved in the family business operations in at one time or another.

In the early to mid 1970's, Numerical Control (NC) machine tools began to be sold and Selway became the distributor for American Machine tool builders such as Excelo, American, Carlton, Wells Index and Bandit controls. However, by the late 70's and early 80's the American product lines were having issues with quality and delivery. Selway looked to a few key Japanese machine tool manufacturers and became the distributor for Matsuura, Mori Seiki and Nakamura on the West Coast.

During this same time period, Selway expanded its operations by building a new state of the art 42,000 square foot Corporate office, showroom, parts and warehouse facility in Union City, CA to support its customer base. Also in 1980, Pat Selway moved to Seattle, WA and opened the Selway Sales and Service office to develop and support machine shops and manufacturers in Washington and Oregon.

Selway continued to seek key machine tool builders and in 1988 became the exclusive dealer in Northern California, Northern Nevada, Oregon and Washington for the Haas Automation product line. Since then, Selway has been one of the top 3 dealers in the United States for Haas. Other key machine tool manufacturers have aligned themselves over the years such as Hwacheon, Toshiba, Mitutoyo and Quantum.

In 2014, Selway sponsored the first "West Coast Manufacturing Expo" (WCME) at its corporate headquarters in Union City, CA. At this event, not only were there 19 machine tools on exhibit but manufacturing concepts and solutions in turning, milling, drilling, workholding, design and CAM support were presented. There were over 500 attendees from major machine shops and manufactures on the West Coast. Also at the Expo, Selway announced the acquisition of "Trinity Automation" and the new company "Trinity Robotic Automation" displayed and presented concepts for simple to complex automation using Fanuc Robots.

Today, Selway has local sales, service and showrooms in Auburn, WA…Wilsonville, OR…Sacramento, CA…Union City, CA (Corporate office)…and Buena Park, CA. The business still has the flavor of a family business with second and third generation Selway's, and a large portion of employees that have 20+ years of employment that are like family. The company was built on a strong relationship between the Founder, Roy Selway, and his banker. This same type of relationship building prevails today, with employees, manufacturers and customers.