View the National Motor Freight Classification freight class list on various online sites, including FMLFreigh.com and ShipTMS.com. The list divides items based on their transportability ratings, which are primarily based on a given item's density. Other elements factored into an item's transportability include the handling, stow-ability and liability of the item.
The NMFC is a standard that compares commodities moving in interstate, intrastate and foreign commerce based on the transportation characteristics of the commodity. A commodity's transportability rating is based on grades from each of these categories. Graded commodities fall into one of 18 freight classes ranging from class 50 to class 500, with 500 being ideal transportability.
The NMFC grading system is provided by the National Motor Freight Traffic Association. It provides both parties in shipping transactions the ability to base negotiations off of defined standards.
In order to participate in the NMFC, transportation companies must either become a member of the NMFTA or complete a license agreement and pay an annual fee. As members of the NMFC, transportation companies can use and reference the provisions of the NMFC in their contracts and rate schedules. This includes commodity descriptions, classes, rules, packaging specifications and bills of lading. The provisions of the NMFC only apply to transportation companies who use or reference the NMFC.