New York
San Francisco
+1-450-247-3522 Mon – Fri 07:00 -16:30 801 Kenney/Williams Road, Hemmingford , QC, J0L 1H0
+1 2223 4567 Mon - Fri 09:00 - 17:00 4th Avenue Kingston St. New York
+1 8887-3342 Mon - Fri 09:00 - 17:00 55th Floor Paulsson Bd. SF
Get A Quote

About Us

We are AS9100, ITAR and CGP Certified

Welcome to Hess Aerospace & Defense

I have always believed that quality should be our top priority and come first with everything we deliver to our customers. Honesty, hard work, and continuous innovation have been my compass.

I built a business based on quality workmanship and delivering every order on time and on budget. We’ve been around long enough to know that trust and dependability are still one of the most important things our customers want from a supplier and we never disappoint.

We do what we say and say what we do!

John Hess




  • To be the partner-of-choice to the aerospace and defense industry, for highest quality manufacturing of high performance components and assemblies. To offer unparalleled and personalized service to our clients.


  • To continue to provide our clients with first class machining services and support sustained by a workplace environment that encourages education, innovation and co-operation.


Hess Aerospace & Defense was established in 1960 by John Hess, a European-trained precision machinist.  A family-run business with a combined 150 years of experience, we manufacture high performance, built to print metal and composite parts and assemblies, proudly serving our clients in the aerospace and defense industries.  Our installations are located 30 minutes south of Montreal, a major hub of the aerospace industry in Quebec. Minutes off Autoroute 15 south, we are strategically situated to serve the Quebec, Ontario and U.S. areas.

Quality and customer service remain at the heart of our business.  From prototype to production run, we focus on meeting our customers’ precise requirements.  Our more than 55 years in business has allowed us to develop a solid and reliable supplier base. It also ensures that we can deliver machined components and complete assemblies on time and according to our clients’ specifications.   We offer personalized service and work in partnership with our clients to find a solution adapted to their needs.

Our decades of success demonstrate our firm commitment to quality, innovation and continuous improvement.  Years of hands-on machining experience enables us to reduce production times and costs, facilitates product development and promotes innovation.  Our dedicated team possesses the skills, experience, and values to ensure our clients benefit from unmatched service and response to their requirements, all at a competitive cost.


Inspire our customers’ trust by meeting our commitments to them, with consistent quality, cost-effective services, on-time delivery and personalized service.

Committed to transparency and rigour in our processes, allowing us to evolve and adapt in order to offer a customer experience that surpasses their expectations

Reinforce an effective continuous improvement culture that supports experienced, talented employees, ensuring that our clients will benefit from the highest levels of quality, traceability and service delivered with professionalism and respect.


  • CNC milling 3 and 4 ½ axis of metals and composites
  • CNC turning, including swissturn with live tooling
  • Micromachining for ballistic, medical, optic and drone applications
  • Sheet metal machining, bending and welding
  • Complete assembly including surface finishing, paint and marking
  • Modification of commercial components
  • Machining of plastics & composites
  • Engineering support for reduction of machining times and costs
  • Specialization in heatsinks and aluminum housings
  • CARC Paint finishing
  • Silk Screening
  • Turnkey project development