NAICS 336212

Overview

The North American Industry Classification System (NAICS) is the common framework federal statistical programs use to categorize business establishments for collecting, analyzing, and publishing data on the U.S. economy. Developed under the Office of Management and Budget and first adopted in 1997 to replace SIC, NAICS is jointly maintained by the U.S., Canada, and Mexico and is organized by production processes; the current vintage is 2022. ¹

NAICS 336212 (Truck Trailer Manufacturing) covers establishments primarily engaged in manufacturing truck trailers, truck trailer chassis, cargo container chassis, detachable trailer bodies, and detachable trailer chassis for sale separately. Utility/light-truck trailers and travel trailers are classified elsewhere. This definition guides statistical classification and is commonly referenced to align industry reporting and procurement market analyses. ²

See also on G2X:

• G2X — NAICS 336212 overview
• G2X — NAICS 336211
• G2X — NAICS 336214

What this NAICS covers

• Manufacturing of truck trailers and semitrailers intended for highway use. ²
• Fabrication of truck trailer chassis sold as standalone products. ²
• Production of cargo container (intermodal) chassis. ²
• Manufacturing of detachable trailer bodies for mounting to truck chassis. ²
• Manufacturing of detachable trailer chassis for later body mounting. ²
• Sales of the above units when produced without a towing vehicle or purchased chassis. ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	336211	Motor Vehicle Body Manufacturing (e.g., truck and bus bodies and cabs). 2
NAICS	336214	Travel Trailer and Camper Manufacturing (utility and light-truck trailers, campers). 2
NAICS	333924	Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing; motor vehicle–type trailers are classified in 336212. 2
PSC	2330	Trailers (product code used in federal procurement reporting). 5

Scope notes and exclusions

• Includes chassis and detachable bodies built for mounting on trucks but sold separately from towing units. ²
• Excludes utility trailers, light‑truck trailers, and travel trailers; these fall under NAICS 336214. ²
• Establishments making heavy‑duty truck chassis or assembling complete heavy‑duty trucks belong under NAICS 336120, not 336212. ²
• “Semitrailer manufacturing” appears as an illustrative example within the broader motor vehicle body and trailer manufacturing subsector. ²

Frequently asked questions

• What exactly is covered by NAICS 336212? NAICS 336212 includes manufacturing of truck trailers and semitrailers, related chassis, cargo container (intermodal) chassis, and detachable bodies sold independently from towing vehicles. It excludes the manufacture of the towing units and utility/light‑truck trailers or recreational travel trailers. ²

• How does 336212 differ from 336214? NAICS 336214 covers travel trailers, campers, pickup caps, and utility/light‑truck trailers. NAICS 336212 focuses on truck trailers and associated chassis/bodies designed for towing by trucks and tractors, not recreational or light-utility units. ²

• What is the SBA small business size standard for 336212? SBA uses employee-based size standards for manufacturing sectors. The current threshold for NAICS 336212 is provided in SBA’s Table of Small Business Size Standards; check the latest table for the applicable employee limit for this code. ⁴

• Is 336212 eligible under the Women‑Owned Small Business (WOSB) program? Yes. SBA’s list of Eligible NAICS for the Women‑Owned Small Business Federal Contracting program includes NAICS 336212. Eligibility also requires that the firm meet WOSB program criteria and the applicable size standard. ⁶

• When did federal statistics move to NAICS 2022? The Census Bureau began publishing data on the 2022 NAICS basis with releases from the 2022 Economic Census in 2024 and is phasing adoption across programs through 2027. Agencies migrate on varying schedules; consult the implementation timeline for details. ³

Useful resources

• Census: “NAICS Codes & Understanding Industry Classification Systems” (NAICS overview and structure). ¹
• Census: “Implementation of the 2022 NAICS” (transition timeline and impacts). ³
• SBA: Table of Small Business Size Standards (effective Mar. 17, 2023). ⁴
• Acquisition.gov: Product and Service Code (PSC) Manual (code definitions, including PSC 2330). ⁵

References

1. U.S. Census Bureau — Economic Census: NAICS Codes & Understanding Industry Classification Systems: https://www.census.gov/programs-surveys/economic-census/year/2022/technical-documentation/code-lists/understanding-naics-redirect.html
2. U.S. Census Bureau — NAICS Sector 31–33 manual content (includes 336212 definition and cross‑references): https://www.census.gov/naics/resources/archives/sect31-33.html
3. U.S. Census Bureau — The Census Bureau’s Implementation of the 2022 NAICS: https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
4. U.S. Small Business Administration — Table of Small Business Size Standards (effective March 17, 2023): https://www.sba.gov/document/support-table-size-standards
5. Acquisition.gov — Product and Service Code Manual (April 2025): https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
6. U.S. Small Business Administration — Eligible NAICS for the Women‑Owned Small Business Federal Contracting program: https://www.sba.gov/document/support-eligible-naics-women-owned-small-business-federal-contracting-program