FMI Aerostructures (Forrest Machining)

FMI Aerostructures is a manufacturer of structural parts and assemblies for the aerospace and defense industry. The company is based in Valencia, California. The site says it is one of the largest independent aerospace and defense manufacturers in North America.

The company makes complex components and assemblies in most alloys and in parts of any size. It uses 3, 4, 5 and 6 axis vertical and horizontal machining. The site says its work is approved for fracture, durability, maintenance and flight critical components. Other services include tooling design, forming, assembly and supply chain management.

The main facility covers 230,000 square feet. The site says the building is temperature controlled. It has 31 large bed multi-spindle gantries, with beds up to 110 feet long, and 136 active spindles. The company also works with hard metals, including titanium.

The site says the company serves customers including Boeing, Blue Origin, Lockheed Martin, Northrop Grumman, Safran, Spirit Aerosystems, L3, PPG, Mammoth Freighters and SpaceX.

The site lists AS9100 Rev. D certification, ITAR certification, BAC 5114 approval and FSDA capability. Its quality policy is zero defects. The site says quality inspection is built into the manufacturing process, with decisions based on real time data.

The site says Garl and Barbara Forrest started the company in 1978. Robert and Joanne Butler bought it in 1997. The site lists a first F-22 production part in 2000 and a first F-35 production part in 2003. In 2025, Avem Partners closed its acquisition of FMI Aerostructures.

The office is at 27756 Avenue Mentry in Valencia, California. The phone number is (661) 257-0231. The site has a contact form with sales and general departments. The company has a LinkedIn page.