What is NAICS code 333120?

NAICS 333120 is the industry "Construction Machinery Manufacturing" in the North American Industry Classification System, part of the Manufacturing sector (33).

What is the size standard for NAICS 333120?

The SBA sets a small business size standard for each NAICS code, either average annual receipts or number of employees. Check the current value for 333120 in the SBA table of size standards on sba.gov; it changes from time to time.

NAICS Code 333120: Construction Machinery Manufacturing

NAICS code 333120 is the industry for construction machinery manufacturing in the Manufacturing sector. Agencies tag every federal contract with a NAICS code, so this is the code to list in your SAM.gov registration and to search for bids.

Government contracts under NAICS 333120

Federal agencies obligated $2.9B on contracts under NAICS 333120 from FY2024 to FY2026, including $793M in FY2026. The biggest buyers were the Department of Defense, the Department of the Interior, the General Services Administration. The largest contractors were Caterpillar Inc, American Material Handling, Inc., Pierce Manufacturing Inc.

See the full breakdown: government construction machinery manufacturing contracts, who wins and who buys.

Open government bids for NAICS 333120

The newest open notices from SAM.gov. Bidding needs a free SAM.gov registration.

38--REEL,CABLEClosing soon
Dept of Defense · Combined Synopsis/Solicitation · NAICS 333120 · Historically Underutilized Business (HUBZone) Set-Aside (FAR 19.13)
Posted Oct 29, 2026 · Responses due Nov 9, 2026

See all 1 open bids under NAICS 333120

Small business size standard for NAICS 333120

To bid on small business set-aside contracts under NAICS 333120, your business must be small under the SBA size standard for this code, measured either by average annual receipts or by number of employees. The values are updated periodically, so check the current SBA table of size standards before you bid.

Other NAICS codes in 3331

How to choose the right NAICS code

Pick the 6-digit code that best describes what you sell. List it as your primary code in SAM.gov, and add other codes for related work. Agencies choose one NAICS code for each contract, so check the codes on past awards for the kind of work you do. Search all codes in the NAICS code lookup.

Related guides

Frequently asked questions

What is NAICS code 333120?: NAICS 333120 is the industry "Construction Machinery Manufacturing" in the North American Industry Classification System, part of the Manufacturing sector (33).
What is the size standard for NAICS 333120?: The SBA sets a small business size standard for each NAICS code, either average annual receipts or number of employees. Check the current value for 333120 in the SBA table of size standards on sba.gov; it changes from time to time.
Are there government contracts for NAICS 333120?: Yes. Federal agencies obligated $2.9B on contracts under NAICS 333120 from FY2024 to FY2026, and 1 notices are open right now.