2022 NAICS national industry in sector 42 Wholesale Trade
423490 Other Professional Equipment and Supplies Merchant Wholesalers
NAICS 423490 is the US industry code for other professional equipment and supplies merchant wholesalers. It covers establishments primarily engaged in the merchant wholesale distribution of professional equipment and supplies (except ophthalmic goods and medical, dental, and hospital equipment and supplies).
- Code
- 423490 (2022 NAICS)
- Title
- Other Professional Equipment and Supplies Merchant Wholesalers
- Part of
- Professional and Commercial Equipment and Supplies Merchant Wholesalers
- SBA small business limit
- Up to 150 employees
- Closest UK SIC
- 46510, 46520 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This industry comprises establishments primarily engaged in the merchant wholesale distribution of professional equipment and supplies (except ophthalmic goods and medical, dental, and hospital equipment and supplies).
Examples Census gives
- Church supplies (except silverware, plated ware) merchant wholesalers
- School equipment and supplies (except books, furniture) merchant wholesalers
- Drafting tables and instruments merchant wholesalers
- Scientific instruments merchant wholesalers
- Laboratory equipment (except medical, dental) merchant wholesalers
- Surveying equipment and supplies merchant wholesalers
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Merchant wholesale distribution of professional equipment, instruments, and/or goods sold, prescribed, or used by ophthalmologists, optometrists, and opticians, such as ophthalmic frames and lenses, and sunglasses are classified in Industry 423460, Ophthalmic Goods Merchant Wholesalers.
- Merchant wholesale distribution of professional medical equipment, instruments, and supplies used by medical and dental practitioners (except ophthalmic equipment, instruments, and goods used by ophthalmologists, optometrists, and opticians) and medical facilities are classified in Industry 423450, Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers.
- Merchant wholesale distribution of silverware and plated flatware are classified in Industry 423940, Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers.
- Merchant wholesale distribution of books are classified in Industry 424920, Book, Periodical, and Newspaper Merchant Wholesalers.
- Merchant wholesale distribution of school furniture are classified in Industry 423210, Furniture Merchant Wholesalers.
Activities listed under 423490
The Census index assigns these 27 activities to this code. If your business matches one, this is your code.
- Analytical instruments (e.g., chromatographic, photometers, spectrographs) merchant wholesalers
- Architects' equipment and supplies merchant wholesalers
- Balances and scales, laboratory (except dental, medical), merchant wholesalers
- Barometers merchant wholesalers
- Blackboards merchant wholesalers
- Chemical and technical pottery products merchant wholesalers
- Church supplies (except plated ware, silverware) merchant wholesalers
- Drafting instruments merchant wholesalers
- Drafting tables merchant wholesalers
- Engineers' equipment and supplies merchant wholesalers
- Instruments, professional and scientific, merchant wholesalers
- Laboratory equipment (except dental, medical, ophthalmic) merchant wholesalers
- Professional equipment and supplies (except dental, medical, ophthalmic) merchant wholesalers
- Professional furniture (except dental, metal, ophthalmic, and school) merchant wholesalers
- Professional instruments merchant wholesalers
- Religious supplies merchant wholesalers
- Scales, laboratory (except dental and medical), merchant wholesalers
- School equipment and supplies (except books, furniture) merchant wholesalers
- Scientific instruments merchant wholesalers
- Scientific laboratory equipment merchant wholesalers
- Smartboards merchant wholesalers
- Statuary, religious, merchant wholesalers
- Surveying equipment and supplies merchant wholesalers
- Teaching machines (except computers), electronic, merchant wholesalers
- Vestments, religious, merchant wholesalers
- Veterinarians' equipment and supplies merchant wholesalers
- Wall maps merchant wholesalers
SBA size standard for 423490
To count as a small business for SBA loans and federal contracts under NAICS 423490, your business (including affiliates) must not exceed 150 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 4659), so treat them as a starting point and check the definition.
- 46510Wholesale of computers, computer peripheral equipment and softwareUK SIC
- 46520Wholesale of electronic and telecommunications equipment and partsUK SIC
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
- 423410Photographic Equipment and Supplies Merchant Wholesalers
- 423420Office Equipment Merchant Wholesalers
- 423430Computer and Computer Peripheral Equipment and Software Merchant Wholesalers
- 423440Other Commercial Equipment Merchant Wholesalers
- 423450Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
- 423460Ophthalmic Goods Merchant Wholesalers
Data last changed November 14, 2026. How this page is built.