333519

Rolling Mill and Other Metalworking Machinery Manufacturing

Manufacturing › Machinery Manufacturing › Metalworking Machinery Manufacturing

SBA Size Standard

500 employees

Employee-Based Verify at SBA.gov →

NAICS Code Hierarchy

33

Sector

Manufacturing

333

Subsector

Machinery Manufacturing

3335

Industry Group

Metalworking Machinery Manufacturing

333519

National Industry (This Code)

Rolling Mill and Other Metalworking Machinery Manufacturing

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual
This U.S. industry comprises establishments primarily engaged in manufacturing rolling mill machinery and equipment and/or other metalworking machinery (except industrial molds; special dies and tools, die sets, jigs, and fixtures; cutting tools and machine tool accessories; and machine tools). Illustrative Examples: Assembly machines (i.e., wire making equipment) manufacturing Cradle assembly machinery (i.e., wire making equipment) manufacturing Metalworking coil winding and cutting machinery manufacturing Rolling mill roll machines, metalworking, manufacturing Wire drawing and fabricating machinery and equipment (except dies) manufacturing

✓ Small Business Eligibility at a Glance

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

Size Standard

500 employees

Measurement Period

Current count

Standard Type

Employee-Based

Applies To

All contracts under NAICS 333519

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 industrial molds--are classified in U.S. Industry 333511, Industrial Mold Manufacturing;
Manufacturing metal cutting and metal forming machine tools--are classified in U.S. Industry 333517, Machine Tool Manufacturing;
Manufacturing special dies and tools, die sets, jigs, and fixtures--are classified in U.S. Industry 333514, Special Die and Tool, Die Set, Jig, and Fixture Manufacturing; and
Manufacturing accessories and attachments for metal cutting and forming machine tools (except saw blades)--are classified in U.S. Industry 333515, Cutting Tool and Machine Tool Accessory Manufacturing.

How to Use NAICS 333519 in SAM.gov

NAICS code 333519Rolling Mill and Other Metalworking 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 Metalworking 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 500 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 333519.

Log in Entity Registration Goods & Services Add NAICS Code Enter 333519 Save

Frequently Asked Questions

What is NAICS code 333519?

NAICS code 333519 is 'Rolling Mill and Other Metalworking Machinery Manufacturing', classified under the Manufacturing sector (NAICS 33). This U.S. industry comprises establishments primarily engaged in manufacturing rolling mill machinery and equipment and/or other metalworking machinery (except industrial molds; special dies and tools

What is the SBA small business size standard for NAICS code 333519?

The SBA defines a small business under NAICS code 333519 (Rolling Mill and Other Metalworking Machinery Manufacturing) as one with 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 333519 in SAM.gov?

To register NAICS code 333519 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 333519 (Rolling Mill and Other Metalworking Machinery Manufacturing) to your NAICS code list. You may designate one code as your Primary NAICS code.

Quick Actions

Related NAICS Codes

Other codes in Metalworking Machinery Manufacturing

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

GovBidLab Pro

Not sure which NAICS codes fit your business?

GovBidLab's Federal Sales Roadmap includes a complete NAICS and PSC code strategy tailored to your business.

Get Your Free Consultation

No commitment required • Response within 24 hours

Find Another NAICS Code

Search all 1,012 NAICS codes with SBA size standards and descriptions

Browse by sector:

Agriculture Construction Manufacturing Information/IT Health Care