Establishments primarily engaged in the wholesale distribution of transportation equipment and supplies. Establishments primarily engaged in the wholesale distribution of motor vehicles and motor vehicle parts are classified in Industry Group 501, and those distributing pleasure boats are classified in Industry 5091.
- Aeronautical equipment and supplies-wholesale
- Aircraft and parts-wholesale
- Aircraft engines and engine parts-wholesale
- Aircraft equipment and supplies-wholesale
- Boats, except pleasure-wholesale
- Combat vehicles, except trucks-wholesale
- Golf carts, self-propelled-wholesale
- Guided missiles and space vehicles-wholesale
- Marine propulsion machinery and equipment-wholesale
- Marine supplies (dunnage)-wholesale
- Railroad equipment and supplies-wholesale
- Ships-wholesale
- Space propulsion units and parts-wholesale
- Tanks and tank components-wholesale
- Transportation equipment and supplies except motor