Wholesale Trade › Merchant Wholesalers, Durable Goods › Metal and Mineral (except Petroleum) Merchant Wholesalers
Sector
Wholesale Trade
Subsector
Merchant Wholesalers, Durable Goods
Industry Group
Metal and Mineral (except Petroleum) Merchant Wholesalers
National Industry (This Code)
Metal Service Centers and Other Metal Merchant Wholesalers
Source: U.S. Census Bureau 2022 NAICS
Based on SBA Table of Small Business Size Standards (2024)
Size Standard
500 employees
Measurement Period
Current count
Standard Type
Employee-Based
Applies To
All contracts under NAICS 423510
Set-Aside Programs
8(a), WOSB, HUBZone, SDVOSB
Certification Required
No (self-certify in SAM.gov)
Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.
The following activities are classified elsewhere in the NAICS system:
NAICS code 423510 — Metal Service Centers and Other Metal Merchant Wholesalers — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Metal and Mineral (except Petroleum) Merchant Wholesalers space will be able to find your business.
If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of 500 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 423510.
NAICS code 423510 is 'Metal Service Centers and Other Metal Merchant Wholesalers', classified under the Wholesale Trade sector (NAICS 42). This industry comprises establishments primarily engaged in the merchant wholesale distribution of products of the primary metals industries. Service centers maintain inventory and may perform functi
The SBA defines a small business under NAICS code 423510 (Metal Service Centers and Other Metal Merchant Wholesalers) as one with 500 employees. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.
To register NAICS code 423510 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 423510 (Metal Service Centers and Other Metal Merchant Wholesalers) to your NAICS code list. You may designate one code as your Primary NAICS code.
Other codes in Metal and Mineral (except Petroleum) Merchant Wholesalers
PSC codes commonly used with this NAICS sector
Source: GSA PSC Manual April 2025
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