333120

Construction Machinery Manufacturing

Manufacturing › Machinery Manufacturing › Agriculture, Construction, and Mining Machinery Manufacturing

SBA Size Standard

1,250 employees

Employee-Based Verify at SBA.gov →

NAICS Code Hierarchy

33

Sector

Manufacturing

333

Subsector

Machinery Manufacturing

3331

Industry Group

Agriculture, Construction, and Mining Machinery Manufacturing

333120

National Industry (This Code)

Construction Machinery 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 manufacturing construction machinery, surface mining machinery, and logging equipment. Illustrative Examples: Backhoes manufacturing Bulldozers manufacturing Construction and surface mining-type rock drill bits manufacturing Construction-type tractors and attachments manufacturing Off-highway trucks manufacturing Pile-driving equipment manufacturing Portable crushing, pulverizing, and screening machinery manufacturing Powered post hole diggers manufacturing Road graders manufacturing Surface mining machinery (except drilling) manufacturing

✓ Small Business Eligibility at a Glance

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

Size Standard

1,250 employees

Measurement Period

Current count

Standard Type

Employee-Based

Applies To

All contracts under NAICS 333120

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 drilling and underground mining machinery and equipment--are classified in Industry 33313, Mining and Oil and Gas Field Machinery Manufacturing;
Manufacturing industrial plant overhead traveling cranes and hoists, truck-type cranes and hoists, winches, aerial work platforms, and automotive wrecker hoists--are classified in Industry 33392, Material Handling Equipment Manufacturing; and
Manufacturing rail layers, ballast distributors, and other railroad track-laying equipment--are classified in Industry 336510, Railroad Rolling Stock Manufacturing.

How to Use NAICS 333120 in SAM.gov

NAICS code 333120Construction Machinery 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 Agriculture, Construction, and Mining Machinery 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 1,250 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 333120.

Log in Entity Registration Goods & Services Add NAICS Code Enter 333120 Save

Frequently Asked Questions

What is NAICS code 333120?

NAICS code 333120 is 'Construction Machinery Manufacturing', classified under the Manufacturing sector (NAICS 33). This industry comprises establishments primarily engaged in manufacturing construction machinery, surface mining machinery, and logging equipment. Illustrative Examples: Backhoes manufacturing Bulld

What is the SBA small business size standard for NAICS code 333120?

The SBA defines a small business under NAICS code 333120 (Construction Machinery Manufacturing) as one with 1,250 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 333120 in SAM.gov?

To register NAICS code 333120 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 333120 (Construction Machinery Manufacturing) to your NAICS code list. You may designate one code as your Primary NAICS code.

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Related NAICS Codes

Other codes in Agriculture, Construction, and Mining Machinery Manufacturing

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

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