NAICS 423810

Overview

The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments to support the collection, analysis, and publication of U.S. economic statistics. Developed under the Office of Management and Budget (OMB) and adopted in 1997 in coordination with Canada and Mexico, it replaced the SIC and is updated on a five-year cycle; agencies are transitioning to the current 2022 vintage. ²

NAICS 423810 covers merchant wholesalers primarily engaged in distributing specialized construction and non–oil-well mining machinery and equipment, and related parts. The U.S. Census Bureau uses this code across economic programs to tabulate wholesale trade activity for this segment. ¹

See also on G2X:

• G2X — NAICS 423810
• G2X — NAICS 423820
• G2X — NAICS 423830

What this NAICS covers

• Wholesale distribution of excavating and earthmoving machinery and equipment (e.g., bulldozers, loaders, graders). ¹
• Wholesale distribution of road construction and maintenance machinery and equipment. ¹
• Wholesale distribution of cranes and lifting equipment used in mining (except oil and gas). ¹
• Wholesale distribution of scaffolding and related temporary support systems. ¹
• Wholesale distribution of logging and forestry machinery and equipment. ¹
• Wholesale of parts and attachments primarily for the above construction, mining, and logging equipment. ¹

Related NAICS and PSC codes

Official cross‑references and boundaries

• Oil-well machinery and equipment distribution is classified in NAICS 423830, not 423810. ¹
• Renting or leasing heavy construction/mining equipment without operators falls under NAICS 532412, not wholesale trade. ¹
• Manufacturing of construction machinery is classified in NAICS 333120; manufacturing of underground mining machinery is in NAICS 333131, not wholesale. ¹
• General building materials wholesalers are classified elsewhere in NAICS 4233xx; 423810 focuses on machinery/equipment wholesalers. ¹

Frequently asked questions

• What activities are included under NAICS 423810?
  Establishments that merchant-wholesale specialized construction, logging, and non–oil-well mining machinery and equipment (and related parts) are included. Examples range from excavating machinery to scaffolding and road construction equipment. ¹

• How is NAICS 423810 different from NAICS 423830?
  NAICS 423810 covers construction/mining (except oil-well) machinery wholesalers, while NAICS 423830 covers industrial machinery wholesalers, including oil-well machinery and equipment. The 423830 entry explicitly cross-references oil-well machinery from 423810. ¹

• Did NAICS 423810 change in the 2022 NAICS update?
  Census documents the 2022 NAICS implementation but does not enumerate a code-specific change for 423810. Not specified by official sources ².

• Where can official federal statistics be found for NAICS 423810?
  Census publishes 6-digit NAICS industry tables (including wholesale trade) through the Economic Census and related programs; users can query sector 42 and drill to 423810 in the 2022 releases. ⁴ See also on G2X: NAICS 423810.

Useful resources

• G2X — NAICS 423810
• U.S. Census Bureau — Implementation of the 2022 NAICS (transition timeline and scope). ²
• U.S. Census Bureau — 2017 NAICS Manual (official industry definitions, including 423810 cross-references). ¹
• U.S. Census Bureau — 2022 Economic Census: Industry tables by NAICS. ⁴

References

1. U.S. Census Bureau. 2017 NAICS Manual (PDF) — Industry 423810 and related cross-references. https://www2.census.gov/library/reference/naics/publications/2017-NAICS-Manual.pdf
2. 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
3. General Services Administration. Product and Service Code (PSC) Manual — April 2025. https://www.acquisition.gov/content/psc-manual-april-2025.pdf
4. U.S. Census Bureau. 2022 Economic Census — Industry Tables. https://www.census.gov/programs-surveys/economic-census/data/tables/industry.html