423510

Metal Service Centers and Other Metal Merchant Wholesalers

Wholesale Trade › Merchant Wholesalers, Durable Goods › Metal and Mineral (except Petroleum) Merchant Wholesalers

SBA Size Standard

500 employees

Employee-Based Verify at SBA.gov →

NAICS Code Hierarchy

42

Sector

Wholesale Trade

423

Subsector

Merchant Wholesalers, Durable Goods

4235

Industry Group

Metal and Mineral (except Petroleum) Merchant Wholesalers

423510

National Industry (This Code)

Metal Service Centers and Other Metal Merchant Wholesalers

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual
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 functions, such as sawing, shearing, bending, leveling, cleaning, or edging, on a custom basis as part of sales transactions. Illustrative Examples: Cast iron pipe merchant wholesalers Metal rods merchant wholesalers Metal bars (except precious) merchant wholesalers Metal sheets merchant wholesalers Metal spikes merchant wholesalers Metal ingots (except precious) merchant wholesalers Metal pipe merchant wholesalers Nails merchant wholesalers Metal plates merchant wholesalers Noninsulated wire merchant wholesalers

✓ Small Business Eligibility at a Glance

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.

Cross-References

The following activities are classified elsewhere in the NAICS system:

Merchant wholesale distribution of gold, silver, and platinum--are classified in Industry 423940, Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers;
Merchant wholesale distribution of automotive, industrial, and other recyclable metal scrap--are classified in Industry 423930, Recyclable Material Merchant Wholesalers; and
Merchant wholesale distribution of insulated wire--are classified in Industry 423610, Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers.

How to Use NAICS 423510 in SAM.gov

NAICS code 423510Metal 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.

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Frequently Asked Questions

What is NAICS code 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

What is the SBA small business size standard for NAICS code 423510?

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.

How do I register NAICS code 423510 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.

Quick Actions

Related NAICS Codes

Other codes in Metal and Mineral (except Petroleum) Merchant Wholesalers

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

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