Petroleum Products

What is Freight Class?

Freight class is a standard classification system for shipments, defined by the National Motor Freight Traffic Association (NMFTA). It's used to categorize commodities like Petroleum Products for transport, taking into account factors like weight, dimensions, density, storage capability, ease of handling, and liability. Freight class is a system to categorize different types of goods being shipped.

How to determine Freight Class

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Density is a key concept in freight shipping, as it significantly impacts the freight class for commodities like Petroleum Products and hence, the shipping cost. It is calculated as the weight of the shipment divided by its volume. It's a measure of how much a shipment weighs compared to the space it takes up.

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Stowability is used in freight shipping to describe how easily an item can be stowed or stored in relation to other items. For example, when trying to understand stowability for Petroleum Products, it is important to know if the item can be packaged efficiently and stowed onto the truck easily. In other words- It's an assessment of how well a shipment can be loaded onto a trailer.

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Liability is a term used to refer to the accountability or risk involved in transporting Petroleum Products. It's one of the factors considered when determining freight class. Liability is the responsibility assumed by a carrier for the safe delivery of goods.

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Handling refers to the procedures and precautions taken when moving and storing Petroleum Products. It is one of the factors considered when determining freight class for Petroleum Products. It's the measures taken to safely transport goods.

Freight Class Commodities


Petroleum Oil


NOI, Petroleum oil, NOI, petrolatum or petrolatum preparations, prepared and represented as a remedy, medicine or lubricant for the human body, will be classed under the specification for medicines, NOI and When palletized, lubricating oil may be shipped in Package 1500 modified so that the film enclosure of the completed package may have end openings. End openings must not exceed 1/2 the exposed height of the inner containers.

Common Commodity Items



For many NMFC® codes there isn’t just one single class that is applied. Often, NMFC® numbers have multiple "sub-classes", which are almost always based on the density of the shipment. In the instance where your NMFC® number has multiple sub classes, it's best to contact an expert, like Koho, to help identify which subclass to use.


What is NMFC code?

The National Motor Freight Classification (NMFC) is the freight classification system devised by the National Motor Freight Traffic Association (NMFTA) and is used for all interstate, intrastate, and foreign commercial movement of LTL cargo. NMFC codes provide standardized freight classes to determine the ease of transport of many of the wide variety of commodities that are shipped together in LTL shipments.

What is a CWT rate?

CWT stands for hundredweight. LTL shipments are priced “per 100 pounds,” “cwt,” or “per hundredweight.” This means that a 400 lb shipment priced at $25 CWT would cost $100, not including accessories or specialty services.