423490 — Other Professional Equipment and Supplies Merchant Wholesalers
Description
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) (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Illustrative Examples
- 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
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 5049 - Professional Equipment and Supplies, NEC (via SIC1987:5049→NAICS1997:42149→2002:423490→2007:423490→2012:423490→2017:423490→2022:423490)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC L099 — Technical Representation Services: Miscellaneous
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 423490 valid in 2022? ▾
Yes, 423490 is a valid 6-digit 2022 NAICS national industry code representing 'Other Professional Equipment and Supplies Merchant Wholesalers' under Sector 42 in the official classification index.
What is the SBA size standard for NAICS code 423490? ▾
The Small Business Administration (SBA) has established a small business size standard of 150 employees for NAICS code 423490 (Other Professional Equipment and Supplies Merchant Wholesalers), calculated based on employees.
What is the legacy SIC equivalent for NAICS 423490? ▾
According to official Census Bureau concordance tables, NAICS code 423490 (Other Professional Equipment and Supplies Merchant Wholesalers) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 5049 - Professional Equipment and Supplies, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 423490:
- Sector 42 Directory Hub — List of related industries in the Wholesale Trade sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 423490 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Other Professional Equipment and Supplies Merchant Wholesalers).
- 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.