3336 - Engine, Turbine, and Power Transmission Equipment Manufacturing

Understanding the nuts and bolts behind modern machinery is essential in today’s manufacturing landscape. NAICS Code 3336 plays a pivotal role in defining the sector responsible for the production of engines, turbines, and power transmission equipment—critical components used across multiple industries from automotive to aerospace.

What is NAICS Code 3336?

NAICS Code 3336 specifically covers Engine, Turbine, and Power Transmission Equipment Manufacturing. This industry comprises establishments primarily engaged in the manufacturing of:

• Internal combustion engines (gasoline, diesel, and others)
• Gas turbines
• Steam turbines
• Mechanical power transmission equipment, including gears, bearings, clutches, and related devices

These products form the backbone of mechanical power systems that drive industrial machinery, vehicles, and energy generation equipment.

Sector and Typical Business Activities

NAICS 3336 falls under the broader Manufacturing sector, which includes businesses involved in the physical or chemical transformation of materials into new products.

Typical Business Activities Include:

• Manufacture of internal combustion engines for automobiles, industrial machinery, and marine vessels.
• Production of gas turbines used in jet engines, power plants, and compressors.
• Manufacturing of steam turbines for power generation and industrial processes.
• Fabrication of mechanical power transmission equipment such as:
  • Gears
  • Bearings
  • Clutches
  • Power transmission belts and chains

Many companies within this NAICS code support the automotive, aerospace, energy, and heavy machinery industries by supplying essential components.

Size Standards for NAICS Code 3336

To determine eligibility for certain government contracts and small business programs, understanding the size standards tied to NAICS 3336 is crucial. The U.S. Small Business Administration (SBA) establishes size standards based on either average annual receipts or number of employees, varying by specific industry details.

NAICS Code	Industry Title	Size Standard (Employees)	Size Standard (Annual Receipts)
333611	Turbine and Turbine Generator Set Units Manufacturing	1,000 employees	N/A
333612	Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing	1,000 employees	N/A
333613	Mechanical Power Transmission Equipment Manufacturing	1,000 employees	N/A
333618	Other Engine Equipment Manufacturing	1,000 employees	N/A

Note: The primary size standard measure for this NAICS code family is 1,000 employees

Examples of Businesses Under NAICS 3336

• Internal Combustion Engine Manufacturers: Companies producing engines for automotive or industrial use.
• Gas and Steam Turbine Producers: Firms involved in turbine manufacturing for power generation or aerospace applications.
• Mechanical Power Transmission Equipment Makers: Businesses manufacturing gears, bearings, belts, clutches, and other related parts.

Notable companies typically fall into OEM (original equipment manufacturer) or industrial parts supplier categories servicing utilities, transportation, and manufacturing industries.

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NAICS Code 3336 – Full Code Details Table

NAICS Code	Description	Sector	Typical Products / Services
3336	Engine, Turbine, and Power Transmission Equipment Manufacturing	Manufacturing	Internal combustion engines, gas turbines, steam turbines, gears, bearings, clutches, power transmission equipment

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Frequently Asked Questions (FAQ)

What industries use products from NAICS Code 3336 manufacturers?

Products from this industry are widely used in automotive, aerospace, energy generation, industrial machinery, and transportation sectors.

What is the main difference between gas turbines and steam turbines?

Gas turbines use combustion gases to spin turbines, commonly in jet engines and power plants, whereas steam turbines use high-pressure steam, primarily for electricity generation.

Are all businesses manufacturing mechanical power transmission equipment classified under NAICS 3336?

Yes, businesses that primarily manufacture mechanical power transmission components such as gears, clutches, and bearings are included in NAICS 3336.

How can small businesses in this sector benefit from the NAICS classification?

Being classified under NAICS 3336 helps small businesses identify eligibility for government contracts, grants, and SBA loan programs tailored for manufacturing firms.

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Conclusion

NAICS Code 3336 defines an essential manufacturing sector that produces engines, turbines, and mechanical power transmission equipment vital to much of modern industry. Understanding this classification helps businesses, government agencies, and partners accurately identify, qualify, and support manufacturing enterprises that power our world’s machinery and energy systems.

Optimizing your business descriptions and proposals with NAICS 3336 can unlock significant contracting opportunities in a diverse and growing sector of manufacturing.