What is the legacy SIC equivalent for NAICS 336412?

NAICS code 336412 maps to the following legacy 1987 SIC codes: 3724 - Aircraft Engines and Engine Parts.

336412 — Aircraft Engine and Engine Parts Manufacturing

Q: Is NAICS code 336412 valid in 2022?

Yes, 336412 is a valid 6-digit 2022 NAICS national industry code representing '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).

NAICS 336412 is 'Aircraft Engine and Engine Parts Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,500 employees.

Description

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).

Overview Facts

NAICS Code	336412
Industry Title	Aircraft Engine and Engine Parts Manufacturing
SBA Size Standard	1,500 employees
IRS PBA Code	336410 (rolled-up match)
Sectors Hierarchy	Sector 31-33 → 336 → 3364
Source / Verified	US Census 2022 NAICS Manual / 2026-06-28

NAICS Structure: 336412 National Industry

Sector (2)

31-33

Manufacturing

Subsector (3)

336

Transportation Equipment Manufacturing

Industry Group (4)

3364

Aerospace Product and Parts Manufacturing

Industry (5)

33641

Aerospace Product and Parts Manufacturing

National Industry (6)

336412

Aircraft Engine and Engine Parts Manufacturing

Legacy SIC Concordance

Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.

SIC 3724 - Aircraft Engines and Engine Parts (via SIC1987:3724→NAICS1997:336412→2002:336412→2007:336412→2012:336412→2017:336412→2022:336412)

Related Resources & Compliance Guides

Further regulatory reference links for NAICS code 336412:

Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.

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Frequently Asked Questions (FAQ)

Is 336412 a valid 2022 NAICS code?

NAICS 336412 is 'Aircraft Engine and Engine Parts Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,500 employees.

What is the SBA size standard for NAICS 336412?

The SBA small business size standard for NAICS 336412 is 1,500 employees (based on employees).

What is the legacy SIC code mapping for 336412?

NAICS code 336412 maps to the legacy 1987 SIC codes: 3724 - Aircraft Engines and Engine Parts.