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ShipPeek supports the following standard NMFC (National Motor Freight Classification) freight classes. Use these values in the freightClass field of rate request items.

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Supported classes

ClassTypical density range
5050+ lbs/ft3
5535-50 lbs/ft3
6030-35 lbs/ft3
6522.5-30 lbs/ft3
7015-22.5 lbs/ft3
77.513.5-15 lbs/ft3
8512-13.5 lbs/ft3
92.510.5-12 lbs/ft3
1009-10.5 lbs/ft3
1108-9 lbs/ft3
1257-8 lbs/ft3
1506-7 lbs/ft3
1755-6 lbs/ft3
2004-5 lbs/ft3
2503-4 lbs/ft3
3002-3 lbs/ft3
4001-2 lbs/ft3
500Less than 1 lb/ft3

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How freight class works

Freight class is determined by the NMFC code assigned to your commodity. Higher class numbers indicate freight that is more expensive to ship relative to its weight (lighter, bulkier, or more fragile items). If you are unsure of the correct freight class for your commodity, consult the NMFC tariff or contact your ShipPeek representative.

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Example

{
  "items": [
    {
      "weight": 500,
      "freightClass": 70,
      "description": "Machine parts",
      "quantity": 1,
      "package": "Pallets_48x40"
    }
  ]
}