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NAICS Code· 336412

NAICS 336412: Aircraft Engine and Engine Parts Manufacturing

This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) manufacturing aircraft engines and engine parts; (2) developing and making prototypes of aircraft engines and engine parts; (3) aircraft propulsion system conversion (i.e., major modifications to systems); and (4) aircraft propulsion systems overhaul and rebuilding (i.e., periodic restoration of aircraft propulsion system to original design specifications). Cross-References.Show more

NAICS 336412 – Aircraft Engine and Engine Parts Manufacturing encompasses the design, development, and production of jet engines, turboprops, auxiliary power units, and critical engine components such as turbine blades, combustors, fuel control systems, and exhaust nozzles for military and defense aerospace platforms. This sector supports the lifecycle maintenance and modernization of propulsion systems across fighter jets, transport aircraft, helicopters, and unmanned aerial systems.

399
Active Contracts
$6.2B
Total Obligations (12mo)
9.3K
Awarded Contracts (12mo)
739
Contractors Awarded (12mo)
1
Median Bidders per Award
-37.4%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 336412.

AI Industry Description

NAICS 336412 – Aircraft Engine and Engine Parts Manufacturing encompasses the design, development, and production of jet engines, turboprops, auxiliary power units, and critical engine components such as turbine blades, combustors, fuel control systems, and exhaust nozzles for military and defense a...

NAICS 336412 – Aircraft Engine and Engine Parts Manufacturing encompasses the design, development, and production of jet engines, turboprops, auxiliary power units, and critical engine components such as turbine blades, combustors, fuel control systems, and exhaust nozzles for military and defense aerospace platforms. This sector supports the lifecycle maintenance and modernization of propulsion systems across fighter jets, transport aircraft, helicopters, and unmanned aerial systems. In the federal contracting landscape, it represents a high-technology, precision-manufacturing niche critical to national defense readiness, requiring stringent compliance with military specifications, AS9100 quality standards, and ITAR regulations. Contracts often involve long-term sustainment, retrofitting, and technology insertion programs to extend service life and enhance performance under extreme operational conditions. The leading contractor in this sector is STARWIN INDUSTRIES, LLC, a specialized manufacturer known for its expertise in precision machining and advanced component fabrication for defense propulsion systems. The competitive landscape is dominated by small businesses and niche Tier 2 suppliers with deep technical capabilities in high-temperature alloys, additive manufacturing, and non-destructive testing, often partnering with larger primes to meet complex DoD requirements. The Department of Defense is the primary buyer, driving demand through aircraft modernization initiatives, fleet sustainment programs, and next-generation propulsion research. Key programs include engine upgrades for F-35, F-15, F-16, and V-22 platforms, as well as next-generation adaptive cycle engine development under the Adaptive Engine Transition Program. The market remains highly specialized, with limited competition due to technical barriers, supply chain dependencies, and security clearances. Opportunities exist for firms with certified capabilities in jet engine repair, overhaul, and component remanufacturing, particularly those aligned with the DoD’s emphasis on resilient domestic supply chains and digital thread integration for predictive maintenance.

Small Business Size Standard

The SBA threshold that decides who can bid NAICS 336412 work as a small business.

1,500 employees
Applies to the whole industry code

The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.

13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.

Top Contractors

Companies with the highest total award value under NAICS 336412, ranked by dollars won.

Ranked by total awards

Top Agencies

Federal agencies directing the most contract spending toward NAICS 336412.

Department Of Defense8,049 awards$4.4B
Department Of Defense (dod)945 awards$916.0M
FA8121 Afsc Pzaaa2 awards$344.2M
Naval Air Systems Command3 awards$158.1M
Ok DLA Aviation At Oklahoma City64 awards$137.8M
DLA Aviation175 awards$112.9M
Department Of Homeland Security31 awards$88.5M
Department Of Commerce1 award$5.4M
National Aeronautics And Space Administration5 awards$3.4M
DLA Land And Maritime16 awards$2.5M

Competition

How many companies historically bid on federal awards in NAICS 336412, from bidder counts reported on USAspending.

Usually Single-Bid

Half or more of reported awards drew exactly one bidder, usually a sign of incumbent-held work rather than an open field. · 146,987 reported awards

Median Bidders

1

Per reported award, all-time

Single-Bid Awards

65%

Share of reported awards with one bidder

10+ Bidder Awards

2%

Share of reported awards with 10+ bidders

Reported Awards

146,987

80% of 183,321 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
336412This Code
Aircraft Engine and Engine Parts Manufacturing
Usually Single-Bid165%
146,98780% of 183,321
33641NAICS Industry
Usually Single-Bid161%
1,369,04872% of 1,905,946
3364Industry Group
Aerospace Product and Parts Manufacturing
Usually Single-Bid161%
1,369,04872% of 1,905,946
336Subsector
Fewer Bidders238%
2,927,90480% of 3,665,512
33Sector
Manufacturing
Fewer Bidders244%
16,883,00469% of 24,369,785

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Aircraft Engine and Engine Parts Manufacturing, by shared sector, subsector, and industry group.

Aircraft Manufacturing

This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) m...
336411Same Industry GroupHigh Similarity

Other Aircraft Parts and Auxiliary Equipment Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing aircraft parts or...
336413Same Industry GroupHigh Similarity

Guided Missile and Space Vehicle Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing complete guided m...
336414Same Industry GroupHigh Similarity

Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing guided missile an...
336415Same Industry GroupHigh Similarity

Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing guided missile an...
336419Same Industry GroupHigh Similarity

Automobile and Light Duty Motor Vehicle Manufacturing

This industry comprises establishments primarily engaged in (1) manufacturing complete automobiles a...
336110Same SubsectorMedium Similarity

Heavy Duty Truck Manufacturing

This industry comprises establishments primarily engaged in (1) manufacturing heavy duty truck chass...
336120Same SubsectorMedium Similarity

Motor Vehicle Body Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing truck and bus bodies ...
336211Same SubsectorMedium Similarity

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NAICS 336412 FAQ

Frequently Asked Questions

NAICS code 336412 covers Aircraft Engine and Engine Parts Manufacturing. This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) manufacturing aircraft engines and engine parts; (2) developing and making prototypes of aircraft engines and engine parts; (3) aircraft propulsion system conversion (i.e., major modifications to systems); and (4) aircraft propulsion systems overhaul and rebuilding (i.e., periodic restoration of aircraft propulsion system to original design specifications). Cross-References.

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