SBA size standard
1,250 employees
Measured by average number of employees over the last 24 months
SBA table effective March 2023
Official definition
This industry comprises establishments primarily engaged in manufacturing construction machinery, surface mining machinery, and logging equipment.
FY2025 federal spending
The Department of Defense bought 93% of the $1.1B obligated under 333120 in FY2025.
- Contract awards
- 9,998
- Contract vehicles (IDVs)
- 129
Top buying agencies
- Department of Defense$1.0B
- General Services Administration$30.8M
- Department of the Interior$21.3M
- Department of State$5.3M
- Department of Justice$3.7M
FY2025 federal contract obligations, USAspending.gov
NAICS 333120 obligated $1.1 billion in FY2025 across 9,998 contract awards. DoD is $1.01 billion, or 93 percent, and the requirement behind it is military engineer equipment: dozers, loaders, graders, and the specialized variants that have to be transportable and field-maintainable. GSA at $31 million buys through fleet and schedule channels, Interior at $21 million buys for public lands, State at $5 million for overseas facilities.
What belongs here
Construction machinery, surface mining machinery, and logging equipment.
- Heavy duty trucks and truck chassis are 336120.
- General purpose machinery with no named category is 333998.
- Repairing and overhauling the equipment after delivery is 811310.
Competing in this code
The code had 129 IDVs alongside 9,998 awards in FY2025. The distinguishing federal requirement is not the machine, it is the militarized configuration: transportability envelopes, blackout lighting, slave receptacles, and technical manuals in government format. Commercial equipment dealers routinely bid these solicitations and lose on the configuration requirements rather than on price. A manufacturer or dealer who can document a previously accepted military configuration for a given model has a repeatable advantage, because that configuration gets bought again for years.
NAICS 333120 FAQ
What is the SBA size standard for NAICS 333120?
SBA sets it at 1,250 employees, counted as a 24-month average headcount across your company and every affiliate, not revenue. At or under that number you are small on NAICS 333120 solicitations and eligible for the set-asides in this code.
Which agencies buy construction machinery under NAICS 333120?
FY2025 obligations: DoD ($1 billion), GSA ($31 million), Interior ($21 million), State ($5 million), DOJ ($4 million). DoD's 93 percent is military engineer equipment, and GSA and Interior are the accessible civilian buyers for commercial-configuration machines.
Why do commercial dealers lose NAICS 333120 solicitations?
Configuration, not price. Military engineer equipment carries transportability envelopes, blackout lighting, slave receptacles, and government-format technical manuals. A commercial machine that meets the performance specification but not the configuration requirements is technically unacceptable, and those requirements are where most first-time bidders fail.
Is construction equipment repair covered by NAICS 333120?
No. 333120 is manufacturing. Repair, overhaul, and field maintenance of delivered machinery falls under 811310. Dealers who sell and service should register both, since federal buyers issue equipment purchases and maintenance contracts as separate requirements with different competitive fields.