Metal Trades Department International Affiliates

International Association of Machinists and Aerospace Workers

Headquarters 9000 Machinists Place Upper Marlboro MD 20772 Work Phone: (301) 967-4500 Website:

With nearly 700,000 active and retired members, the IAM is one of the largest and most diverse labor unions in North America. From Boeing and Lockheed Martin to United Airlines and Harley-Davidson, you will find IAM members across all walks of life. IAM members demand respect and dignity in the workplace. Together, we have been able to bargain for increased job security, higher wages and improved benefits.


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9000 Machinists Place Upper Marlboro MD 20772

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