Heavy Duty Truck Manufacturing

Manufacturing › Transportation Equipment Manufacturing › Motor Vehicle Manufacturing

SBA Size Standard

1,500 employees

Employee-Based Verify at SBA.gov →

NAICS Code Hierarchy

Sector

Manufacturing

336

Subsector

Transportation Equipment Manufacturing

3361

Industry Group

Motor Vehicle Manufacturing

336120

National Industry (This Code)

Heavy Duty Truck Manufacturing

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual

This industry comprises establishments primarily engaged in (1) manufacturing heavy duty truck chassis and assembling complete heavy duty trucks, buses, heavy duty motor homes, and other special purpose heavy duty motor vehicles for highway use or (2) manufacturing heavy duty truck chassis only.

✓ Small Business Eligibility at a Glance

Based on SBA Table of Small Business Size Standards (2024)

Size Standard

1,500 employees

Measurement Period

Current count

Standard Type

Employee-Based

Applies To

All contracts under NAICS 336120

Set-Aside Programs

8(a), WOSB, HUBZone, SDVOSB

Certification Required

No (self-certify in SAM.gov)

Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.

Cross-References

The following activities are classified elsewhere in the NAICS system:

→Manufacturing truck and bus bodies and assembling vehicles on purchased chassis--are classified in U.S. Industry 336211, Motor Vehicle Body Manufacturing;

→Manufacturing motor homes on purchased heavy truck chassis--are classified in U.S. Industry 336213, Motor Home Manufacturing;

→Manufacturing vans, minivans, and light trucks--are classified in Industry 336110, Automobile and Light Duty Motor Vehicle Manufacturing;

→Manufacturing military armored vehicles--are classified in U.S. Industry 336992, Military Armored Vehicle, Tank, and Tank Component Manufacturing; and

→Manufacturing off-highway construction equipment--are classified in Industry 333120, Construction Machinery Manufacturing.

How to Use NAICS 336120 in SAM.gov

NAICS code 336120 — Heavy Duty Truck Manufacturing — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Motor Vehicle Manufacturing space will be able to find your business.

If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of 1,500 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 336120.

Frequently Asked Questions

What is NAICS code 336120?

NAICS code 336120 is 'Heavy Duty Truck Manufacturing', classified under the Manufacturing sector (NAICS 33). This industry comprises establishments primarily engaged in (1) manufacturing heavy duty truck chassis and assembling complete heavy duty trucks, buses, heavy duty motor homes, and other special purpo

What is the SBA small business size standard for NAICS code 336120?

The SBA defines a small business under NAICS code 336120 (Heavy Duty Truck Manufacturing) as one with 1,500 employees. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.

How do I register NAICS code 336120 in SAM.gov?

To register NAICS code 336120 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 336120 (Heavy Duty Truck Manufacturing) to your NAICS code list. You may designate one code as your Primary NAICS code.