NAICS Code 336413 — Other Aircraft Parts and Auxiliary Equipment Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 6 national industries under 33641 (Aerospace Product and Parts Manufacturing).

Code	336413
Title	Other Aircraft Parts and Auxiliary Equipment Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,250 employees (SBA footnote 7)

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in (1) manufacturing aircraft parts or auxiliary equipment (except engines and aircraft fluid power subassemblies) and/or (2) developing and making prototypes of aircraft parts and auxiliary equipment. Auxiliary equipment includes such items as crop dusting apparatus, armament racks, inflight refueling equipment, and external fuel tanks.

Cross-References.

Is a business under 336413 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 336413 qualifies as a small business if it does not exceed 1,250 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

This industry is subject to SBA footnote 7, which may add exceptions or special measurement rules — check the official SBA size standards table for the full text.

Where 336413 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	336	Transportation Equipment Manufacturing
Industry Group	3364	Aerospace Product and Parts Manufacturing
NAICS Industry	33641	Aerospace Product and Parts Manufacturing
National Industry	336413	Other Aircraft Parts and Auxiliary Equipment Manufacturing

No direct SIC mapping is shown for this code: it was introduced or redefined after the official 1987 SIC ↔ 2002 NAICS concordance. Use the crosswalk tool to explore related legacy codes.

Related National Industry codes

• 336411 — Aircraft Manufacturing
• 336412 — Aircraft Engine and Engine Parts Manufacturing
• 336414 — Guided Missile and Space Vehicle Manufacturing
• 336415 — Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing
• 336419 — Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.