336120 - Heavy Duty Truck Manufacturing

When it comes to the backbone of commercial transportation, NAICS code 336120 — Heavy Duty Truck Manufacturing plays an essential role in the manufacturing sector. This code categorizes businesses specializing in the production of heavy-duty trucks designed for heavy transport and commercial use. In today’s logistics-driven economy, understanding this industry is crucial for manufacturers, suppliers, contractors, and policymakers alike.

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What is NAICS Code 336120?

NAICS (North American Industry Classification System) code 336120 specifically refers to the industry involved in Heavy Duty Truck Manufacturing. This sector comprises establishments primarily engaged in manufacturing heavy-duty trucks such as:

• Tractor trucks
• Dump trucks
• Garbage trucks
• Special purpose highway vehicles (e.g., firefighting vehicles)
• Heavy-duty commercial trucks and more

These vehicles are built to handle heavy transport tasks and are essential components of supply chains, construction, and public safety operations.

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Sector Overview: Manufacturing

This NAICS code falls under the Manufacturing sector, highlighting its role in producing tangible heavy-duty vehicles. Businesses under this classification focus on building trucks using their own chassis and assembling various specialized models suited for highway transportation and industrial tasks.

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Typical Business Activities under NAICS 336120

Businesses classified under NAICS 336120 are engaged in:

• Manufacturing tractor trucks for highway use
• Producing dump trucks for commercial and construction purposes
• Building heavy-duty commercial trucks for freight and hauling
• Assembling buses and motor homes mounted on their own manufactured chassis
• Constructing garbage trucks, firefighting vehicles, and other special purpose highway vehicles

These businesses provide heavy-duty vehicles necessary for industries like logistics, emergency services, and construction.

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Size Standards for NAICS 336120

To qualify under this NAICS code for Small Business Administration (SBA) programs and contracts, companies must have 1,500.0 employees or less. This size standard allows a wide range of manufacturers, from medium-sized companies to large enterprises, to qualify for government contracting set-asides and other business assistance programs.

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Examples of Businesses within NAICS 336120

• Freightliner Trucks – Renowned manufacturer of tractor and heavy-duty trucks.
• Peterbilt Motors Company – Maker of premium commercial trucks and highway tractors.
• Kenworth Truck Company – Specializes in heavy-duty and medium-duty trucks.
• Mack Trucks, Inc. – Known for heavy-duty truck manufacturing including dump trucks and refuse vehicles.
• Volvo Trucks North America – Producer of heavy-duty tractors and commercial trucks.

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Detailed Code Breakdown: NAICS 336120

Code Detail	Description
Assembly plants, heavy trucks, and buses on chassis of own manufacture	Facilities where heavy trucks and buses are built on their own chassis
Buses (except trackless trolley) assembling on chassis of own manufacture	Manufacturing of buses mounted on proprietary chassis
Chassis, heavy truck, with or without cabs, manufacturing	Production of heavy-duty truck chassis with or without driver's cabs
Garbage trucks assembling on chassis of own manufacture	Building refuse collection trucks on custom-made chassis
Heavy trucks assembling on chassis of own manufacture	General heavy truck assembly operations on proprietary chassis
Highway tractors assembled on chassis of own manufacture	Manufacturing highway tractor trucks on owned chassis
Motor homes, self-contained, mounted on heavy truck chassis of own manufacture	Production of motor homes built on heavy truck chassis
Special purpose highway vehicles (e.g., firefighting vehicles) assembling on heavy chassis of own manufacture	Assembling custom vehicles like firefighting trucks on own chassis
Tractors, truck for highway use, assembled on chassis of own manufacture	Manufacturing trucking tractors designed for highway transportation
Truck tractors for highway use, assembling on chassis of own manufacture	Assembly of truck tractors specifically for hauling on highways
Trucks, heavy, assembling on chassis of own manufacture	General assembly of heavy trucks on company-manufactured chassis

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Frequently Asked Questions (FAQ)

What types of vehicles are manufactured under NAICS 336120?

Heavy-duty trucks including tractor trucks, dump trucks, garbage trucks, buses (excluding trackless trolleys), motor homes mounted on heavy-duty chassis, and special purpose highway vehicles like firefighting trucks.

What sector does NAICS 336120 belong to?

It belongs to the Manufacturing sector.

How many employees can a company have to qualify as a small business under this NAICS code?

The employee size standard is 1,500 or fewer employees.

Are motor homes included in Heavy Duty Truck Manufacturing?

Yes, self-contained motor homes mounted on heavy truck chassis manufactured by the company fall under this NAICS code.

Can assembly plants for heavy trucks be classified under NAICS 336120?

Yes, assembly plants that build heavy trucks and buses on chassis of their own manufacture are included.

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Conclusion

NAICS code 336120 – Heavy Duty Truck Manufacturing—represents a vital manufacturing segment responsible for producing the powerful vehicles that keep industries moving. From freight hauling to emergency response, these heavy-duty trucks are engineered for endurance and performance. Whether you are entering government contracting, manufacturing, or procurement, knowing the scope, size standards, and classification under this code is essential.

Optimizing your business or content for NAICS 336120 can open doors to new opportunities in contracts, partnerships, and industry recognition.

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Keywords: NAICS 336120, Heavy Duty Truck Manufacturing, heavy-duty trucks, tractor trucks, dump trucks, commercial trucks, manufacturing sector, truck assembly, government contracting, small business size standard