Questions?

You can contact the IAM National 401(k) Fund Office directly to get more information about the plan.

  • Phone: 800-424-9608 (participants); 202-785-2658 (others). Our phones are open Monday through Friday, 9:00 a.m. to 7:00 p.m. Eastern Time.
  • Fax: 202-463-8098 or 202-457-8653 
  • Mail: IAM National 401(k) Fund, 99 M Street, SE, Suite 600, Washington, DC 20003-4595
  • E-mail form: Click Here