What is freight class 77.5?
Density cannot produce class 77.5.
The NMFC density scale effective July 19, 2025 has 13 sub-provisions, and class 77.5 is not one of them. It now applies only where a commodity's own NMFC item assigns it — typically for handling, stowability or liability reasons rather than density. If a calculator returned class 77.5 from your dimensions and weight, it is running the retired 18-row table.
What typically ships at class 77.5
- Tires and inner tubes
- Bathroom fixtures
- Commodity-specific NMFC items only
Examples are illustrative of typical density, not classification rulings. A commodity's actual class comes from its NMFC item; density decides it only where that item is density-based.
The class 77.5 mistake worth knowing
You cannot reach class 77.5 by density. The scale effective July 19, 2025 has 13 sub-provisions and 77.5 is not one of them — it survives only on commodity-specific NMFC items with handling or stowability factors. Any calculator that returns 77.5 from dimensions and weight is running the retired 18-row table.
Measure your actual shipment with the freight class calculator — it applies the July 19, 2025 scale and shows how far you are from the next class in both directions.